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Made available in DSpace on 2022-04-29T08:38:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-01-01 Pollen morphology, ultrasculpture and ultrastructure were investigated for Poiretia in search of morphological characters of taxonomic importance using light microscopy as well as scanning and transmission electron microscopy. Additionally, principal components analysis was done to elucidate patterns of variation among the species. Pollen grains are small to medium size, isopolar, prolate spheroidal to prolate, 3-zonocolporate, colporus with operculum, membrane and margo are ornamented. Five pollen types are recognised and described based on mesocolpium exine ultrasculpture. Exine consists of a compact tectum, eutectate, tectate perforate to semitectate, the infratectum is collumelar and granular, foot layer discontinuous to absent in aperture region and endexine is continuous. A comprehensive description of the operculum, membrane ornamentations and the ultrastructure of exine were given for all species in the genus, nine of which were not previously analysed palynologically. Systematic implications of the palynological variations found in the literature and through light, scanning and transmission electron microscopical analyses were discussed. This article describes the importance of the characterisation of Poiretia pollen grains, which contributes to the systematics of the Adesmia informal clade. The class of endoaperture, ultrasculpture of mesocolpium and apocolpium, and ultrastructure of tectum, foot layer, and endexine support the eurypalynous status of Poiretia and are useful to recognise some species that have problematic delimitation (P. latifolia, P. coriifolia, P. unifoliolata, P. mattogrossensis, P. elegans, P. marginata) as well as groups of species. Programa de Pós-graduação em Biodiversidade Vegetal e Meio Ambiente Instituto de Botânica Núcleo de Pesquisa em Palinologia Instituto de Botânica Programa de Pós-graduação em Ciências Biológicas (Botânica) IBB Universidade Estadual Paulista Laboratório De Biotecnologia Vegetal Centro De Energia Nuclear Na Agricultura Universidade De São Paulo Programa de Pós-graduação em Ciências Biológicas (Botânica) IBB Universidade Estadual Paulista

Collaea insignis, a new species from Midwestern of Brazil, is described and illustrated from plants recognized as C. speciosa or misinterpreted as C. aschersoniana and C. stenophylla. However, the association of the morphological (e.g., morphology of leaves, flowers and indument types), leaf anatomical (see below), and geographical (allopatric distribution) features led us to recognized such species, and also propose four lectotypes and a synonym within this Collaea group. The leaf anatomy of Collaea species is described here for the first time, and it is noteworthy that all species present stomata in crypts, a rare feature in plants, and not described in the American Fabaceae. Other characters such as indumented leaflets, thick cuticle, palisade parenchyma with 2 or 3 layers of cells, spongy parenchyma with 1–3 layers of loosened cells, cortex in the midrib, petiole, pulvinus and pulvinules with rhombohedral crystals, bicollateral vascular bundles in the midrib and collateral in the petiole and petiole, and common epidermal cells with different shapes and sizes between the abaxial, and adaxial surfaces are also provided for the first time for the genus. In addition to several vegetative and reproductive characters that can be used to separate the new species from morphologically similar congeners. The studied species can be anatomically differentiated by a set of characters such as contour of the midrib, pulvinus, and puvinules, presence or absence of petiole, type of the vascular bundles of the mesophyll, midrib, and pulvinules, type of sheath extension surrounding the vascular bundles in the mesophyll and its direction, as well as the number of parenchyma and collenchyma layers in the cortex of the midrib, pulvinus and pulvinules. In addition to the taxonomic, and macro and micromorphological novelties, new interpretations about the leaf of the genus are proposed.

Stylosanthes, with approximately 50 species, is a pantropical, economically important genus of Leguminosae, with several species having forage potential and soil improvement potential. Thirty-two species have been recorded in Brazil, with the Northeast region being one of the main centers of diversity of the genus in the country. Despite this, no taxonomic work focusing on Stylosanthes has been done for the region. This study presents a taxonomic treatment of Stylosanthes species occurring in the Northeast region of Brazil. Botanical specimens were collected in the field together with visits to the main herbaria in the Northeast (ALCB, HUEFS, HUNEB, HVASF) for specimen analysis. Online consultation of databases in virtual herbaria, analysis of regional flora accounts, assessment of types and discussions with legume experts were also undertaken. Twenty-three taxa were confirmed as occurring in NE Brazil, with six new occurrences recorded for the states of Ceará, Paraíba, Piauí, and Rio Grande do Norte. Species in the studied area are mainly differentiated by their fruit and bract morphology. Key words: campos rupestres, Cerrado, Fabaceae, flora, plant taxonomy, semiarid. Resumo Stylosanthes, com aproximadamente 50 espécies, é um dos gêneros mais economicamente importantes de Leguminosae, com táxons que apresentam potencial forrageiro em regiões tropicais. Trinta e duas espécies foram registradas no Brasil, sendo a Região Nordeste um dos principais centros de diversidade do gênero. Apesar disto, nenhum trabalho taxonômico focando em Stylosanthes foi feito para a região. Este estudo apresenta o tratamento taxonômico das espécies de Stylosanthes ocorrentes na Região Nordeste do Brasil. Espécimes foram coletados em campo junto com visitas às principais coleções do Nordeste (ALCB, HUEFS, HUNEB, HVASF) para análise dos táxons. Consultas on-line dos bancos de dados em herbários virtuais, análises das floras regionais, consultas aos tipos e discussões com especialistas em leguminosas também foram realizadas. Foram confirmados 23 táxons, sendo seis novas ocorrências registradas para os estados do Ceará, Paraíba, Piauí, e Rio Grande do Norte. As espécies encontradas nas áreas estudadas diferenciam-se principalmente pela morfologia dos frutos e brácteas. Palavras-chave: campos rupestres, Cerrado, Fabaceae, flora, taxonomia vegetal, semiárido.

Taxonomic studies of Mimosa subser. Polycephalae revealed a new species and indicated the need for taxonomic and nomenclatural adjustments in the group. Mimosa pseudoracemosa is described and illustrated as a new species from Goiás State in central-western Brazil. We discuss its geographic distribution, environmental preferences, phenology and conservation status and compare it with the morphologically similar M. pseudoradula and M. flavocaesia. A new status for M. pseudoradula var. detonsa and a new name are proposed (= M. detonsa), including M. pseudoradula var. anapolitana and M. pseudoradula var. crystallites as its synonyms, as well an updated circumscription for M. pseudoradula without the admission of varieties. We also present descriptions, images, maps, comments on their distributions and morphological relationships, flowering and fruiting periods, and conservation statuses. In addition to the morphological and geographic discontinuities of the aforementioned taxa, their trichome micromorphology supported the establishment of the new species, as well as the taxonomic decisions involving M. pseudoradula.

Made available in DSpace on 2021-06-25T15:01:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Nissolia rondonensis, a new critically endangered species from the state of Rondonia, Brazil, is described and illustrated. Its distribution, informal conservation status, phenology, and morphological and anatomical affinities with its closest relative, Nissolia klugii, are discussed. In addition, a new combination, Nissolia subulata is proposed. A key to the Brazilian species of Nissolia is presented. Sao Paulo State Univ, UNESP, IBB Inst Biosci Botucatu, Dept Bot, POB 510, BR-18618970 Botucatu, SP, Brazil Royal Bot Gardens, Comparat Plant & Fungal Biol Dept, Richmond TW9 3AE, Surrey, England Sao Paulo State Univ, UNESP, Program Postgrad Biol Sci Bot, IBB Inst Biosci Botucatu, BR-18618000 Botucatu, SP, Brazil Inst Fed Goiano, IFG, Urutai Campus, BR-75790000 Urutai, Go, Brazil Missouri Bot Garden, 4344 Shaw Blvd, St Louis, MO 63110 USA Sao Paulo State Univ, UNESP, IBB Inst Biosci Botucatu, Dept Bot, POB 510, BR-18618970 Botucatu, SP, Brazil Sao Paulo State Univ, UNESP, Program Postgrad Biol Sci Bot, IBB Inst Biosci Botucatu, BR-18618000 Botucatu, SP, Brazil CNPq: 400567/2016-4 FAPESP: 2015/13386-0 CAPES: 88887.373155/2019-00 CNPq: 304396/2015-0

Made available in DSpace on 2021-06-25T12:33:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-02-01 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Universidade do Estado da Bahia Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) Premise of research. Stylosanthes, comprising approximately 50 species, is considered a taxonomically difficult genus, as its component taxa demonstrate very uniform external morphological characteristics. The presence of very similar species complexes within the genus is one of the principal factors complicating the identification of its taxa. Within that context, the present study seeks to morphologically analyze the fruit surface of Brazilian Stylosanthes species in a search for characteristics of potential use in the identification of species and species groups. Additionally, multivariate analyses (principal components analysis [PCA] and unweighted pair group method with arithmetic mean [UPGMA]) were used to elucidate patterns of variation within the species complexes and to test the validity of current species delimitations. Methodology. The fruits of 22 species of Stylosanthes were mounted, without previous treatment, directly on stubs using double-sided tape and were then sputter-coated with gold for examination using scanning electron microscopy (SEM). PCA and UPGMA were performed using 22 operational taxonomic units and 10 morphological fruit article characteristics. Pivotal results. The surfaces of the fruit articles are variously covered by simple trichomes, glandular trichomes, papillae, veins, and grooves. Four ornamentation patterns were observed, as follows: verrucose, papillose, reticulate, or reticulate with a papillose appearance. Multivariate analyses (PCA and UPGMA) do corroborate, in part, the three species complexes as traditionally circumscribed (the S. guianensis, S. macrocephala, and S. scabra complexes); however, accessions of S. guianensis species (S. guianensis complex) appeared nested within the S. macrocephala and S. scabra complexes. Conclusions. The micro- and macromorphological analyses provided results useful for separating species, as observed in the identification key, but multivariate analyses with only characteristics of fruit did not support the three traditional species complexes: S. guianensis, S. macrocephala, and S. scabra. Further multivariate analysis using other characters should be investigated to better understand the relationships of the species of each one of the complexes. But regardless of whether the complexes remained in this study, the results obtained from the fruit characteristics were useful in showing that it is important to separate the species treated here. Univ Estado Bahia, Dept Educ, Programa Posgrad Biodiversidade Vegetal, Campus 8,Rua Gangorra 503, BR-48608240 Paulo Afonso, BA, Brazil Univ Estadual Paulista, Inst Biociencias Botucatu, Dept Bot, Rua Prof Dr Antonio Celso Wagner Zanin S-N, BR-18618689 Botucatu, SP, Brazil Royal Bot Gardens, Dept Comparat Plant & Fungal Biol, Richmond TW9 3AB, Surrey, England Univ Estadual Paulista, Inst Biociencias Botucatu, Dept Bot, Rua Prof Dr Antonio Celso Wagner Zanin S-N, BR-18618689 Botucatu, SP, Brazil Universidade do Estado da Bahia: 015/2019 FAPESP: 2015/13386-0 CNPq: 400567/2016-4 CNPq: 160015/2019-7 FAPERJ: E-26/202.501/2019

During our taxonomic study of Nissolia Jacq. (Leguminosae), a new species from Northern Brazil was discovered. Distinct from other species of the genus by its outstanding bracts, Nissolia bracteosa is described and illustrated here. This taxon is distinguished from its related species mainly by its conspicuous stipules, 6–8 x 4–7 mm in the new species (vs. 4–6 x 2–3 mm in N. bracteosa and 2–5 x 1–2 mm in N. brasiliensis). In addition, a new gland type (secretory emergences) is reported.

Two new species of Stylosanthes Sw. (Leguminosae), S. minima and S. mitzii, endemic to central-southern Bahia State, in northeastern Brazil, are described and illustrated. The species differ from each other principally by the length of the fruit rostrum, the presence or absence of indumentum, the shapes or sizes of their bracts and bract leaflets, and numbers of spikes per inflorescence. Stylosanthes minima differs from S. macrocephala by having the upper segments of the fruit pilose to extremely pubescent (vs. glabrescent), rostrum with 0.5–1 mm long (vs. 1.5–2.5 mm long), and by the number of spikes (2–7 vs. 1–3). Stylosanthes mitzii differs from S. capitata by having bracts oval (vs. elliptic), bract leaflets lanceolate (vs. elliptic), and rostrum shorter (0.5–1.5 mm long vs. 2–2.5 mm long). An identification key is provided for all the known species with an axis rudiment from Bahia State, as well as data concerning the micromorphology of the fruits, images, and maps.

Made available in DSpace on 2021-06-25T12:26:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-12-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) Rupert Barneby Award of The New York Botanical Garden Biologia Vegetal post-graduate program at UNICAMP UNESP-Botucatu Instituto de Pesquisas JBRJ UFOP UFG Eriosema comprises c. 150 species and has a pantropical distribution and two centres of diversity, Africa and America. The species occur in tropical savannas and grasslands, including the cerrado in Brazil. They have adapted to these environments by developing specialized underground organs, and an abundance of trichomes. Here we present the first comprehensive molecular phylogenetic analysis of Eriosema, including species from its entire distribution range and generating 391 new DNA sequences. We sampled 140 species from nine genera of Cajaninae, of which 94 (60% of the genus) were Eriosema. Our analyses were based on the nuclear ITS and plastid rp132 and trnQ regions, and used maximum likelihood and Bayesian phylogenetic analyses of individual and combined data sets. In all analyses, Eriosema was resolved as monophyletic, but its interspecific relationships are not well resolved. Rhynchosia is not monophyletic, and some African Rhynchosia spp. emerged together as sister to Eriosema. Our study supports the monophyly of Adenodolichos, Dunbaria, Flemingia and Cajanus, but Chrysoscias and Bolusafra formed a dade that is sister to a group of Rhynchosia spp. Paracalyx was resolved as paraphyletic and nested among African Rhynchosia spp. Divergence time analysis suggested that the Eriosema lineages diverged 6.5-10.7 Mya. Two major lineages have diversified in Eriosema, one including most of the African species (4.41-6.68 Mya), the other mainly composed of the South American cerrado species (3.56-5.78 Mya). These results revealed that Eriosema is a recent and tropical savanna-adapted group, and its diversification occurred in the late Miocene in parallel with the expansion of C-4 grasslands. Univ Estadual Campinas, Inst Biol, Dept Biol Vegetal, Programa Posgrad Biol Vegetal, BR-13083862 Campinas, SP, Brazil Univ Copenhagen, Dept Geosci & Nat Resource Management, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark Smithsonian Inst NMNH, Dept Bot, US Natl Herbarium US, MRC 166,10th & Constitut Ave, Washington, DC 20560 USA Univ Estadual Paulista, Inst Biociencias, Programa Posgrad Ciencias Biol Bot, Dept Bot, BR-18618000 Botucatu, SP, Brazil Royal Bot Gardens, Comparat Plant & Fungal Biol Dept, Richmond TW9 3AB, Surrey, England DIPEQ, Inst Pesquisas Jardim Bot Rio de Janeiro, Rua Pacheco Leao 915, BR-22460030 Rio De Janeiro, RJ, Brazil Univ Fed Goias, Inst Ciencias Biol, Dept Bot, CP 131, BR-74001970 Goiania, Go, Brazil Univ Cape Town, Dept Biol Sci, Bolus Herbarium, ZA-105 Rondebosch, South Africa Univ Estadual Paulista, Inst Biociencias, Programa Posgrad Ciencias Biol Bot, Dept Bot, BR-18618000 Botucatu, SP, Brazil FAPESP: 2015/13386-0 FAPESP: 09/53002-5 CNPq: 400567/2016-4 FAPEMIG: APQ-02323-12 CAPES: 88887.373155/201900 FAPERJ: 203.007/2017 CNPq: 312766/2009-2 CNPq: 563550/2010-4 CNPq: 141628/2016-2

Made available in DSpace on 2020-12-12T01:30:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01 Zornia latifolia is a plant suspected to possess psychoactive properties and marketed as a marijuana substitute under the name ‘maconha brava’. In this study, the effects of fractions obtained from a 2-propanol extract of aerial portions of the plant were determined by multielectrode array (MEA) analyses on cultured networks of rat cortical neurons. Lipophilic (ZL_lipo, mainly containing flavonoid aglycones), and hydrophilic (ZL_hydro, mainly containing flavonoid glycosides) fractions were initially obtained from the raw extract. ZL_lipo significantly inhibited mean firing rate (MFR) and mean bursting rate (MBR) of MEA recordings, while ZL_hydro induced no inhibition. Column chromatography separation of ZL_lipo yielded five fractions (ZL1-ZL5), among which ZL1 induced the strongest MFR and MBR inhibition. NMR and HPLC-MS analyses of ZL1 revealed the prevalence of the common flavonoids genistein (1) and apigenin (2) (in about a 1:1 ratio), and the presence of the rare flavone syzalterin (6,8-dimethylapigenin) (3) as a minor compound. Exposures of MEA to apigenin and genistein standards did not induce the MFR and MBR inhibition observed with ZL1, whereas exposure to syzalterin standard or to a 1:9 mixture syzalterin-genistein induced effects similar to ZL1. These inhibitory effects were comparable to that observed with high-THC hashish, possibly accounting for the plant psychoactive properties. Data indicate that Z. latifolia, currently marketed as a free herbal product, should be subjected to measures of control. In addition, syzalterin showed distinctive pharmacological properties, opening the way to its possible exploitation as a neuroactive drug. ETT Spa National Research Council (CNR) Institute of Biophysics Department of Sciences and Technological Innovation (DISIT) University of Eastern Piedmont Center of Excellence for Biomedical Research (CEBR) University of Genova Department of Experimental Medicine (DIMES) Section of Biochemistry University of Genova Forensic Science Police Service Italian National Police Department of Botany São Paulo State University (UNESP) Department of Earth Environment and Life Sciences (DISTAV) University of Genova Department of Pharmacy (DIFAR) University of Genova Department of Botany São Paulo State University (UNESP)

Made available in DSpace on 2022-04-28T17:23:18Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-02-28 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) A new species of Chamaecrista was found in the Serra do Espinhaco region in the state of Minas Gerais, Brazil, during an expedition to study the taxonomy of this genus. Chamaecrista sempreviva Fort.-Perez & L.C. Zeferino sp. nov. is herein described, illustrated, and assigned to Chamaecrista sect. Absus. Comments about the ecology, distribution, preliminary conservation status as well as its morphological relationships and flowering and fruiting season of the new species, are provided. Additionally, a secretory structure survey of the leaflets of the new species and its related congeners is presented. All species studied share the presence of secretory and mucilaginous idioblasts in their leaflets, but the position of these cells types serves to differentiate them. Univ Estadual Paulista, Inst Biociencias, Dept Bioestat Biol Vegetal Parasitol & Zool, BR-18618000 Botucatu, SP, Brazil Royal Bot Gardens, Comparat Plant & Fungal Biol Dept, Richmond TW9 3AB, Surrey, England Univ Estadual Campinas, Inst Biol, Dept Biol Vegetal, Programa Posgrad Biol Vegetal, BR-13083862 Campinas, SP, Brazil Univ Copenhagen, Dept Geosci & Nat Resource Management, Rolighedsvej 23, DK-1958 Copenhagen C, Denmark Univ Fed Goias, Inst Ciencias Biol, Dept Bot, CP 131, BR-74001970 Goiania, Go, Brazil Univ Estadual Paulista, Inst Biociencias, Dept Bioestat Biol Vegetal Parasitol & Zool, BR-18618000 Botucatu, SP, Brazil CNPq: 457911/2013-1 CNPq: 400567/2016-4 CAPES: 88887.373155/2019-00

Made available in DSpace on 2022-04-29T08:33:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-09-23 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) A revisional taxonomic study of Adesmia subg. Adesmia ser. Bicolores has unveiled a new species from southern Brazil. Adesmia miottoae is described and illustrated here. Its geographic distribution, phenology, conservation status and morphological similarities with its closest relatives, Adesmia punctata and A. incana, are presented. The species is distinguished by glandular trichomes covering all the aerial parts of the plant, except the corolla. These trichomes are shorter than those of Adesmia punctata. Additionally, a detailed anatomical description of the leaflet blade is provided. Graduate Program in Biological Sciences (Botany) UNESP - São Paulo State University IBB - Institute of Biosciences of Botucatu, São Paulo UNESP - São Paulo State University IBB - Institute of Biosciences of Botucatu Department of Botany, PO Box 510, São Paulo UFPEL - Federal University of Pelotas Institute of Biology Department of Botany, PO Box 354, Rio Grande do Sul Graduate Program in Biological Sciences (Botany) UNESP - São Paulo State University IBB - Institute of Biosciences of Botucatu, São Paulo UNESP - São Paulo State University IBB - Institute of Biosciences of Botucatu Department of Botany, PO Box 510, São Paulo FAPESP: nº2015/13386-0 CNPq: nº400567/2016-4 CNPq: nº407147/2018-7 CAPES: nº88887.373155/2019-00

Eriosema is a pantropical genus occurring mostly in savanna vegetation and grasslands of tropical environments, with approximately 150 species and two centers of diversity, one in Africa with about 110 species, and the other in the Neotropics with about 40 species. Considering the large number of Eriosema taxa in Brazil, including five recently described, and the lack of recent study that encompasses all species that occur in the country, a taxonomic synopsis of the Brazilian species of Eriosema was needed and is presented here. Herbaria collections, including type specimens, were consulted and field work was carried out in Brazil. Our study records 35 Eriosema species in Brazil, which concentrates most of the diversity of the genus in the Americas (85%; 35 out of 41 species). Most of this diversity occurs in the Central Brazilian savannas, particularly in the states of Goiás (29 taxa, eight endemic), and Minas Gerais (26 taxa, four endemic). Among all American species in the genus, Eriosema simplicifolium and E. crinitum have the broadest geographical distributions, and occur throughout Brazil and most part of the American continent. They form species complexes and future detailed studies will be necessary in order to understand taxon boundaries and delimitations. An identification key, taxon descriptions, information about type specimens as well as information on the habitat, phenological and geographical records, together with distribution maps, images of representative species in the field and the main morphological characters are provided to assist in the correct identification of this group of savanna plants. We also present 15 lectotypifications, out of which three are second-step.

During a taxonomic study of Rhynchosia in Brazil and intensive field work, a new species from Bahia, R. lewisii, was discovered. The new species is herein described, illustrated and its morphological affinities with related species are presented. Additionally, the conservation status of the new species is discussed, and a key to the taxa of Rhynchosia that occur in the Bahia is provided.

Made available in DSpace on 2019-10-04T12:39:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-07-04 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The genera Eriosema and Rhynchosia, which comprise approximately 150 and 230 species, respectively, belong to the tribe Phaseoleae and to the subtribe Cajaninae. The pollen morphology of 49 species of Eriosema and 13 of Rhynchosia were studied using scanning electron microscopy to identify diagnostic characteristics that could aid in the taxonomic circumscription of those genera. The pollen grains analysed were obtained from specimens deposited in the BOTU, CEPEC, IPA, HRB, HUEFS, OUPR, P, S, UFC, and UFRJ herbaria. The species studied demonstrated that the pollen grains dispersed in monads, are isopolar or heteropolar, triporate or tricolporate, angulaperturate; with the endo-aperture membrane generally psilate and the exine largely reticulate heterobrocate, except for R. claussenii which is microreticulate. We discuss these diverse characteristics, including the ornamentation of the endo-aperture membrane and the margins of the apertures and reticula, to obtain information that possibly could be used to differentiate between the two genera. Although this proved not to be possible using pollen, because many characters overlap between the two genera, nevertheless some species display unique, taxonomically useful, characters, such as R. platyphylla which has an apocolpium in the shape of a 'Y', E. bauchiense with a verrucate exine ornamentation, and E. benthamianum with fossulate lumina. Additionally, two pollen types were identified in Eriosema, one group of species with 3-porate pollen grains and the other composed of species with 3-colporate grains. Univ Estado Bahia, Programa Posgrad Biodiversidade Vegetal PPGBVeg, Dept Educ, Campus 8, Paulo Afonso, Brazil Univ Estado Bahia, Dept Ciencias Humanas, Campus 6, Caetite, Brazil Univ Estadual Paulista, Inst Biociencias, Dept Bot, Programa Posgrad Ciencias Biol Bot, Botucatu, SP, Brazil Royal Bot Gardens, Comparat Plant & Fungal Biol Dept, London, England Univ Estadual Paulista, Inst Biociencias, Dept Bot, Programa Posgrad Ciencias Biol Bot, Botucatu, SP, Brazil

Made available in DSpace on 2020-12-10T17:37:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-07-18 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The dalbergioids, one of the largest clades among legumes, present significant karyotype diversity. Previous studies suggested different base chromosome numbers, hampering the understanding of karyotype evolution in dalbergioid legumes. In this study, we integrated chromosome numbers from the literature with phylogenetic data and new cytogenetic data for six species aiming to clarify the paths of karyotype evolution. We could confirm the base chromosome number of dalbergioid legumes asx = 10, which was constant for the three dalbergioid clades, namely Adesmia, Dalbergia, and Pterocarpus. However, we found alternative base chromosome numbers for some genera, which illustrate the two main mechanisms of chromosome changes found in dalbergioids: polyploidy and dysploidy. Considering the first diverging lineages in the phylogeny, polyploidy and dysploidy could be detected in seven and three nodes, respectively, with two out of the three dysploidy events associated with polyploidy. Nevertheless, considering the chromosome changes within species, the descendent dysploidy was the most common event in dalbergioid legumes. Such a high frequency of dysploidy highlights the importance of studying multiple populations from each species. In addition, the chromosome banding revealed DAPI(+)bands, which is not commonly found in plants, as a possible chromosome marker forStylosanthes. The chromosome banding analysis has taxonomic potential and could be explored in future studies to better understand the complex taxonomic groups inside dalbergioid legumes. Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09606070 Sao Bernardo Do Campo, SP, Brazil Univ Copenhagen, Dept Geosci & Nat Resource Management, DK-1958 Frederiksberg C, Denmark US Natl Herbarium US, Smithsonian Inst NMNH, Dept Bot, Washington, DC USA Univ Estadual Campinas, Inst Biol, Dept Biol Vegetal, BR-13083970 Campinas, SP, Brazil Univ Fed Alagoas, Lab Recursos Genet, BR-57309005 Arapiraca, Alagoas, Brazil Univ Fed Pernambuco, Dept Bot, BR-50670420 Recife, PE, Brazil Univ Estadual Paulista, Inst Biociencias, BR-18618689 Botucatu, SP, Brazil Univ Estadual Paulista, Inst Biociencias, BR-18618689 Botucatu, SP, Brazil FAPESP: 2011/22,215-3

Made available in DSpace on 2020-12-12T02:08:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-07-01 G-fibers have been widely studied in tension wood, but few studies are available on aerial and underground organs of shrub and subshrub, specially comparing those organs of the same plant. The goal of this study is to compare the general pattern of G-fibers distribution, and the structure and histochemistry of G-fibers walls between aerial and underground organs in 19 Eriosema taxa occurring in the tropical savanna, locally called cerrado. The samples were processed according to standard techniques in plant anatomy and histochemistry. G-fibers occurred throughout the vegetative body and were exclusively extraxylary in organs with primary growth and extraxylary and xylary in organs with incipient secondary growth. G-fibers were more abundant and had a thicker G-layer in the underground organs. In all the organs analyzed, the G-fibers were identified by the presence of a non-lignified internal translucent layer (G-layer) sometimes occupying the entire lumen of the fiber. The abundance and wide occurrence of G-fibers in the vegetative axis of Eriosema plants may represent an adaptive mechanism and may explain why plants that belong to this genus are able to survive in adverse Cerrado conditions. We suggest that the conditions of the Cerrado environment may stimulate the differentiation of gelatinous fibers in these plants. In addition, the ecophysiological significance of the G-fibers, we emphasize their taxonomic value as a unifying character of the Eriosema genus. UNESP – São Paulo State University IBB – Institute of Biosciences of Botucatu Postgraduate Program in Biological Sciences (Botany) UNESP – São Paulo State University IBB – Institute of Biosciences of Botucatu Department of Botany, PO Box 510 UNESP – São Paulo State University IBB – Institute of Biosciences of Botucatu Postgraduate Program in Biological Sciences (Botany) UNESP – São Paulo State University IBB – Institute of Biosciences of Botucatu Department of Botany, PO Box 510

Made available in DSpace on 2021-07-14T10:35:44Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-11-23. Added 1 bitstream(s) on 2021-07-14T11:33:50Z : No. of bitstreams: 1 S2175-78602020000100293.pdf: 3939608 bytes, checksum: 06803b47112302d4cc03da5d0aab10cd (MD5) O gênero Zornia com ca. 80 espécies é constituído de dois subgêneros, Myriadena e Zornia, sendo o último com três seções (Zornia, Isophylla e Anisophylla) e apresenta distribuição pantropical. Morfologicamente é caracterizado principalmente pelas flores dispostas em inflorescências espiciformes com bractéolas peltadas aos pares, encobrindo o cálice, tanto na flor e muitas vezes no fruto. O presente estudo teve como objetivo estudar as espécies de Zornia que ocorrem no estado da Paraíba. Para tanto foram realizados estudos morfológicos com base em materiais coletados e principalmente em coleções depositadas nos herbários EAN, JPB, IPA e PEUFR. A identificação dos materiais foi realizada com o auxílio da bibliografia especializada, complementada pela análise de imagens digitais dos tipos. Para cada uma das espécies foi elaborada uma descrição, comentário taxonômico e morfológico, adicionalmente uma chave de identificação foi feita para todo o gênero. Neste estudo foram registradas sete espécies: Zornia brasiliensis, Z. latifolia, Z. leptophylla, Z. guanipensis, Z. myriadena, Z. reticulata e Z. sericea. As espécies Zornia guanipensis, Z. myriadena, e Z. sericea constituem novos registros de ocorrências para o estado. As espécies Zornia myriadena, Z. reticulata, Z. brasiliensis e Z. leptophylla têm distribuição exclusiva na Caatinga. Já Z. guanipensis ocorre na Mata Atlântica, em restinga, enquanto que Z. sericea e Z. latifolia possuem distribuição em ambos os domínios fitogeográficos. The genus Zornia with ca. 80 species is composed of two subgenera, Myriadena and Zornia, the last with three sections (Zornia, Isophylla and Anisophylla) and presents a pantropical distribution. Morphologically it is characterized mainly by the flowers arranged in spiciform inflorescences with paired peltade bracteoles, protecting or hiding the calyx of the flower and often the fruit. This research aimed to the species of Zornia in the state Paraíba. Morphological studies were on materials collected and mainly in specimens deposited in the herbaria EAN, JPB, IPA and PEUFR. The species were identified consulting specialized bibliography, complemented by the analysis of digital pictures of the types. For each species was provided description and taxonomic and morphological comments, additionally a key for identification for the genus was also provided. The present seven species were recognized: Zornia brasiliensis, Z. latifolia, Z. leptophylla, Z. guanipensis, Z. myriadena, Z. reticulata, and Z. sericea. The species Zornia guanipensis, Z. myriadena, and Z. sericea are new records for the Paraiba state. The species Z. myriadena, Z. reticulata, Z. brasiliensis e Z. leptophylla have exclusive distribution in the Caatinga. Already Z. guanipensis occurred mainly in the Atlantic Forest specially in the restinga, while Z. sericea e Z. latifolia were distributed in both the Atlantic Forest and the Caatinga. Universidade Federal da Paraíba Universidade Federal da Paraíba, Depto. Sistemática e Ecologia Universidade Estadual Paulista, Inst. Biociências de Botucatu Universidade Estadual Paulista, Inst. Biociências de Botucatu

The Global Strategy for Plant Conservation (GSPC) was established by the Conference of Parties in 2002 to decrease the loss of plant diversity, reduce poverty and contribute to sustainable development. To achieve this overarching goal, the GSPC has established a series of targets, one of which is to ensure that plant diversity is well understood, so that it can be effectively conserved and used in a sustainable manner. Brazil hosts more than 46,000 species of plants, algae and fungi, representing one of the most biodiverse countries on Earth, and playing a key role in the GSPC. To meet the GSPC goals of Target 1 and facilitate access to plant diversity, Brazil committed to preparing the List of Species of the Brazilian Flora (2008-2015) and the Brazilian Flora 2020 (2016-present). Managing all the information associated with such great biodiversity has proven to be an extremely challenging task. Here, we synthesize the history of these projects, focusing on the multidisciplinary and collaborative approach adopted to develop and manage the inclusion of all the knowledge generated though digital information systems. We further describe the methods used, challenges faced, and strategies adopted, as well as summarize advances to date and prospects for completing the Brazilian flora in 2020.

Made available in DSpace on 2019-10-04T12:36:04Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-03-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) The subtribe Cajaninae of papilionoid legumes has a pantropical distribution and comprises approximately 490 species. These species have diversified throughout dry environments where there are high temperatures and strong light. The subtribe stands out because all its representatives have vesicular glands. In addition, bulbous-based and capitate trichomes are important secretory structures present in all genera of the Cajaninae. We analyzed the ultrastructure and histochemistry of these glandular trichome types in leaflets of the three species of the subtribe. Using transmission electron microscopy and histochemical analyses, we link the glandular secretions to subcellular structures. We here report for the first time the type of exudate and ultrastructure of the glands of subtribe Cajaninae. Terpenoids and phenolics were confirmed by histochemistry tests, and we observed that the organelles responsible for biosynthesis of oils are the most representative in these glands. Each glandular trichome showed particular ultrastructural features compatible with the compounds produced. We suggest that these glandular trichomes, with their respective exudates, act in defense against herbivory and against possible damage by ultraviolet radiation. Univ Estadual Paulista, Inst Biociencias, Programa Posgrad Ciencias Biol Bot, Dept Bot,Inst Biociencias, BR-18618000 Botucatu, SP, Brazil Univ Estadual Campinas, Inst Biol, Dept Biol Vegetal, Programa Posgrad Biol Vegetal, BR-13083862 Campinas, SP, Brazil Royal Bot Gardens, Comparat Plant & Fungal Biol Dept, Richmond TW9 3AB, Surrey, England Smithsonian Inst, NMNH, Dept Bot, US Natl Herbarium US, MRC 166,10th & Constitut Ave, Washington, DC 20560 USA Univ Copenhagen, Dept Geosci & Nat Resource Management, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark Univ Estadual Paulista, Inst Biociencias, Programa Posgrad Ciencias Biol Bot, Dept Bot,Inst Biociencias, BR-18618000 Botucatu, SP, Brazil FAPESP: 2015/13386-0 CNPq: 457911/2013-1 CNPq: 400567/2016-4 CNPq: 304396/2015-0 CNPq: 140598/2015-4

O check-list das Leguminosae do estado de Mato Grosso do Sul conta com a colaboracao de 17 pesquisadores, nove do estado e oito de outras unidades da federacao. Em riqueza destacam-se Arachis L. (30 spp.), Desmodium Desv. (25 spp.), Aeschynomene L. (21 spp.), Stylosanthes Sw. (17 spp.) e Crotalaria L. (16 spp.) em Papilionoideae. O genero Mimosa L. agrega 30 taxons (17 spp., 10 variedades, tres subespecies) seguido por Senegalia Raf. (sete spp.) e Calliandra Benth. (cinco spp.) em Mimosoideae. Chamaecrista Moench (22 spp.), Senna Mill. (17 spp.) e Bauhinia L. (15 spp.) detem o maior numero de especies, em Caesalpinioideae. De modo geral a riqueza da familia concentra-se em nove generos, com 15-29 especies, e a maioria esta representado por uma a tres especies. Leguminosae, uma das mais representativas da flora brasileira, em Mato Grosso do Sul detem expressiva riqueza especifica com 15% do total de especies de leguminosas estimadas para o Brasil.

Eriosema macrostipulatum, a noteworthy new species from Goias State, was discovered during a taxonomic study of the genus in Brazil. It is herein described, illustrated, and has its morphological and anatomical affinities with related species presented. The geographical distribution, conservation status, and information about flowering and fruiting are provided. Additionally, a dichotomous key to the taxa of Eriosema that occur in the Chapada dos Veadeiros National Park, Alto Paraiso de Goias municipality (Goias State) is provided.

The classification of the legume family proposed here addresses the long-known non-monophyly of the traditionally recognised subfamily Caesalpinioideae, by recognising six robustly supported monophyletic subfamilies. This new classification uses as its framework the most comprehensive phylogenetic analyses of legumes to date, based on plastid matK gene sequences, and including near-complete sampling of genera (698 of the currently recognised 765 genera) and ca. 20% (3696) of known species. The matK gene region has been the most widely sequenced across the legumes, and in most legume lineages, this gene region is sufficiently variable to yield well-supported clades. This analysis resolves the same major clades as in other phylogenies of whole plastid and nuclear gene sets (with much sparser taxon sampling). Our analysis improves upon previous studies that have used large phylogenies of the Leguminosae for addressing evolutionary questions, because it maximises generic sampling and provides a phylogenetic tree that is based on a fully curated set of sequences that are vouchered and taxonomically validated. The phylogenetic trees obtained and the underlying data are available to browse and download, facilitating subsequent analyses that require evolutionary trees. Here we propose a new community-endorsed classification of the family that reflects the phylogenetic structure that is consistently resolved and recognises six subfamilies in Leguminosae: a recircumscribed Caesalpinioideae DC., Cercidoideae Legume Phylogeny Working Group (stat. nov.), Detarioideae Burmeist., Dialioideae Legume Phylogeny Working Group (stat. nov.), Duparquetioideae Legume Phylogeny Working Group (stat. nov.), and Papilionoideae DC. The traditionally recognised subfamily Mimosoideae is a distinct clade nested within the recircum-scribed Caesalpinioideae and is referred to informally as the mimosoid clade pending a forthcoming formal tribal and/or clade-based classification of the new Caesalpinioideae. We provide a key for subfamily identification, descriptions with diagnostic charactertistics for the subfamilies, figures illustrating their floral and fruit diversity, and lists of genera by subfamily. This new classification of Leguminosae represents a consensus view of the international legume systematics community; it invokes both compromise and practicality of use.

Made available in DSpace on 2020-12-12T01:47:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-12-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Rhynchosia mineira is described as a new species from the state of Minas Gerais, Brazil. The taxon is morphologically similar to R. arenicola Hassl. but differs mainly in having ovate stipules, a prostrate habit, a densely pubescent stem and ovate to rhomboid leaflets. A description, illustration, distribution map, conservation status, and key to the species of Rhynchosia in the state of Minas Gerais are provided. Universidade Estadual Paulista (UNESP) Departamento de Botânica Instituto de Biociências (IBB), Distrito Rubião Junior s/n, 18618-970, C.P. 510, Botucatu Universidade Estadual de Campinas (UNICAMP) Departamento de Biologia Vegetal Instituto Biologia, Rua Monteiro Lobato 255, Cidade Universitária Zeferino Vaz, Barão Geraldo, 13083-862, Campinas U.S. National Herbarium (US) Department of Botany Smithsonian Institution – National Museum of Natural History, MRC 166, 10th Street and Constitution Avenue, NW Forest Nature and Biomass Section Department of Geosciences and Natural Resource Management University of Copenhagen, Rolighedsvej 23 Universidade Estadual Paulista (UNESP) Departamento de Botânica Instituto de Biociências (IBB), Distrito Rubião Junior s/n, 18618-970, C.P. 510, Botucatu FAPESP: 2015/13386-0 FAPESP: 2017/08984-0 CNPq: 400567/2016-4

Made available in DSpace on 2020-12-12T01:43:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-11-01 Poiretia Vent. is a Leguminosae (Papilionoideae, Dalbergieae) genus comprising 12 species which are distinguished mainly by external morphology of the leaves and inflorescences; however, overlapping in variation of several morphological traits has led to taxonomic problems, including erroneous identifications of species and varieties. Furthermore, attributes of recognized importance among legumes, such as characteristics of secretory structures, have been neglected in the distinction of Poiretia species. Here we described the leaflet blade anatomy of all 12 Poiretia species emphasizing the internal secretory structures in order to identify characters with potential taxonomic value. Leaflets were obtained from herbarium and from plants occurring in natural environments. Samples were processed according to standard techniques for plant anatomy. The leaflets of P. angustifolia and P. punctata were hypostomatic, whereas those of the other species were amphistomatic. The adaxial face of the main vein was flat in P. bahiana, P. coriifolia, P. latifolia and P. unifoliolata, slightly convex in P. elegans and concave in the other species. Bundle sheath extensions were observed in eight of the 12 species. A fiber cap with lignified walls was present externally to the phloem of the midrib, except P. bahiana, P. latifolia, P. marginata and P. punctata. Secretory cavities were present in the mesophyll of all species; in P. angustifolia, P. latifolia, P. longipes, P. marginata and P. tetraphylla secretory cavities occurred in the region of the mesophyll near the midrib, while in P. latifolia the secretory cavities occurred in the cortex of the midrib. The number of epithelial layers varied among species, with secretory cavities having two to six cell layers. Idioblasts in the epidermis of P. crenata, P. latifolia and P. mattogrossensis were quite voluminous. The distinctive characteristics observed among the species were used to develop an identification key for the species of Poiretia. Program of Post-Graduation in Biological Sciences (Botany) UNESP - São Paulo State University IBB - Institute of Biosciences of Botucatu UNESP - São Paulo State University IBB - Institute of Biosciences of Botucatu Departament of Botany, PO Box 510 Program of Post-Graduation in Biological Sciences (Botany) UNESP - São Paulo State University IBB - Institute of Biosciences of Botucatu UNESP - São Paulo State University IBB - Institute of Biosciences of Botucatu Departament of Botany, PO Box 510

Made available in DSpace on 2020-12-10T17:01:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-10-01. Added 1 bitstream(s) on 2021-07-15T14:36:52Z : No. of bitstreams: 1 S0102-33062019000400716.pdf: 14890815 bytes, checksum: ad528a2293a655e084c674965ab7c80d (MD5) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Mimosa baptistae is a new species presenting stalked glandular trichomes that give it a glutinous appearance, mainly with respect to the leaflets. Furthermore, it is an aculeate species, with multijugate leaves, white stamens, and fruits also covered by glandular trichomes. A herbaria survey and fieldwork only recorded this species as occurring on sandstone outcrops of the city Cacapava do Sul, Brazil. The species may be confused with other species of Mimosa sect. Batocaulon ser. Stipellares such as M. bifurca, M. sobralii and M. lepidota. However, features such as absence/presence of aculei, stamens color, habitat, and flower features are useful for distinguishing them from the new species. Here, we provide notes on morphology, geographic distribution, as well as anatomical detail of its glandular trichomes and content. Finally, we discussed the taxonomic significance of the micromorphology of glandular trichomes and their content in Mimosa ser. Stipellares as well as the potential applicability of such features to better understand the morphology of this series. Univ Fed Rio Grande do Sul, Programa Posgrad Bot, BR-91501970 Porto Alegre, RS, Brazil Univ Estadual Paulista, Programa Posgrad Bot, BR-18618970 Botucatu, SP, Brazil Univ Estadual Paulista, Programa Posgrad Bot, BR-18618970 Botucatu, SP, Brazil

Made available in DSpace on 2019-10-03T17:31:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2019. Added 1 bitstream(s) on 2021-07-14T17:52:43Z : No. of bitstreams: 1 S2236-89062019000200206.pdf: 11870450 bytes, checksum: e0e91ddda76c51e2aa09d238807b86ab (MD5) RESUMO Este trabalho apresenta um estudo taxonômico das espécies de Leguminosae - Dalbergieae para a Mata do Buraquinho, João Pessoa, Paraíba, uma área mista contendo elementos de Mata Atlântica, da flora amazônica e da Hileia Baiana. O trabalho tem por base coletas de campo e a análise morfológica de materiais depositados em herbários. Foram encontradas 11 espécies nativas distribuídas em sete gêneros: Aeschynomene evenia, A. viscidula, Andira legalis, A. nitida, Arachis pintoi, Machaerium hirtum, Pterocarpus rohrii, Stylosanthes capitata, S. guianensis, S. viscosa e Zornia latifolia. Desse total de espécies, seis com hábito subarbustivo, quatro com hábito arbóreo e uma herbácea. A ocorrência de Aeschynomene evenia, Andira legalis, Arachis pintoi e Stylosanthes gracilis é registrada pela primeira vez para o Estado da Paraíba. São apresentados chave de identificação, descrições, comentários sobre a morfologia e ilustrações para as espécies. ABSTRACT This work presents a taxonomic study of species of Leguminosae - Dalbergieae from Mata do Buraquinho, João Pessoa, Paraíba State, which is a mixed area composed by elements of Rain Forest, the Amazonian flora, and the Bahian Hileia. The study was based on field collections and morphological analysis of herbarium specimens. As a result, 11 native species distributed into seven genera were found: Aeschynomene evenia, A. viscidula, Andira legalis, A. nitida, Arachis pintoi, Machaerium hirtum, Pterocarpus rohrii, Stylosanthes capitata, S. guianensis, S. viscosa, and Zornia latifolia. Of these species, six are bushes, four are trees, and one is an herb. The occurrence of Aeschynomene evenia, Andira legalis, Arachis pintoi, and Stylosanthes gracilis is recorded for the first time in the state of Paraíba. Identification key, descriptions, comments on the morphology and illustrations for the species are presented. Universidade Federal da Paraíba Departamento de Sistemática e Ecologia Universidade Federal da Paraíba Universidade Estadual Paulista Programa de Pós-Graduação em Ciências Biológicas (Botânica) Instituto de Biociências Universidade Federal de Mato Grosso Instituto de Biociências Departamento de Botânica e Ecologia Universidade Estadual Paulista Programa de Pós-Graduação em Ciências Biológicas (Botânica) Instituto de Biociências

Made available in DSpace on 2019-10-03T17:31:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2019. Added 1 bitstream(s) on 2021-07-14T17:52:42Z : No. of bitstreams: 1 S2175-78602019000100229.pdf: 6962946 bytes, checksum: 3e5384e1c70eabee75239557ee205794 (MD5) Resumo O gênero Chamaecrista possui distribuição pantropical e está bem representado na flora brasileira, principalmente em campos rupestres e matas ciliares. No Brasil são encontradas 256 espécies, sendo que 149 delas aparecem somente em Minas Gerais, o que corresponde mais da metade da diversidade do gênero no país. A área selecionada para o estudo, o Parque Estadual do Rio Preto (PERP), pertence à Cadeia do Espinhaço. A vegetação é composta principalmente por fitofisionomias de Cerrado e Campo rupestre existindo também áreas de matas ciliares e de galerias. O estudo em questão teve como objetivo realizar o levantamento florístico e um estudo taxonômico de Chamaecrista no PERP, abrangendo chave de identificação das espécies e descrições taxonômicas das mesmas. As coletas foram realizadas dentro de um período de dois anos, por meio de caminhadas assistemáticas. O material coletado foi identificado e depositado na coleção do Herbário OUPR. Foram coletados e descritos 19 táxons que compreendem às seções Absus, Chamaecrista e Xerocalyx. Abstract The genus Chamaecrista has a pantropical distribution and it is well represented in the Brazilian flora, mainly in “campos rupestres” and Riparian forests. In Brazil, 256 species are found, of which 149 are found only in Minas Gerais, corresponding more than a half of genus diversity in the country. The area selected for the study, Parque Estadual do Rio Preto (PERP), belongs to Espinhaço Range. The vegetation is composed mainly of physiognomies of cerrado and “campos rupestres”, also existing areas of gallery forests and galleries. The objective of this study was to carry out the floristic and taxonomic survey of Chamaecrista at PERP, to elaborate key of identification of the species and taxonomic descriptions of the same ones. The collections were carried out within a period of two years, through unsystematic walks. The collected material was identified and deposited in the OUPR and BOTU Herbaria. 19 taxa were collected and described that comprises the Absus, Chamaecrista and Xerocalyx sections. Universidade Federal de Ouro Preto Inst. Ciências Exatas e Biológicas Depto. Biodiversidade, Evolução e Meio Ambiente Universidade Federal da Paraíba Centro de Ciências Exatas e da Natureza Depto. Sistemática e Ecologia - Campos I Universidade Federal do Oeste da Bahia Prog. Pós-graduação em Ciências Ambientais Universidade Estadual de Feira de Santana Prog. Pós-graduação em Botânica Universidade Federal de Mato Grosso Inst. Biociências Depto. Botânica e Ecologia Universidade Estadual Paulista Prog. Pós-graduação em Ciências Biológicas (Botânica) Depto. Botânica Universidade Estadual Paulista Prog. Pós-graduação em Ciências Biológicas (Botânica) Depto. Botânica

Resumo Rhynchosia possui distribuição pantropical, apresentando dois principais centros de diversidade para as cerca de 230 espécies, um na África (ca. 140 spp.) e outro nas Américas, onde é registrada a ocorrência de 55 espécies. Este trabalho consiste em um estudo taxônomico do gênero Rhynchosia para o Brasil onde foram encontradas 19 espécies: Rhynchosia arenicola, R. balansae, R. claussenii, R. corylifolia, R. diversifolia, R. edulis, R. hauthalii, R. lateritia, R. leucophylla, R. lineata, R. melanocarpa, R. minima, R. naineckensis, R. phaseoloides, R. platyphylla, R. reticulata, R. rojasii, R. senna, R. schomburgkii. Foram registradas duas novas ocorrências no Brasil, R. claussenii no estado do Maranhão e R. edulis no estado do Espírito Santo. Foi realizado um estudo morfológico para reavaliar os caracteres diagnósticos para pronta identificação das espécies, facilitando a delimitação dos táxons. Além disso, foram fornecidas ilustrações, chave de identificação, descrições e breves comentários, além de dados de distribuição geográfica. Abstract Rhynchosia presents a pantropical distribution, with two main centers of diversity for about 230 species, one in Africa (ca. 140 spp.) and the other in the American continents, where 55 species are recorded. This work consists in a taxonomic study of the genus Rhynchosia in Brazil where 19 species were recorded: Rhynchosia arenicola, R. balansae, R. claussenii, R. corylifolia, R. diversifolia, R. edulis, R. hauthalii, R. lateritia, R. leucophylla, R. lineata, R. melanocarpa, R. minima, R. naineckensis, R. phaseoloides, R. platyphylla, R. reticulata, R. rojasii, R. senna, R. schomburgkii. Two new occurrences were registered for Brazil, R. claussenii in Maranhão state and R. edulis in Espírito Santo state. A morphological study was carried out to re-evaluate the diagnostic characteristics for prompt identification of the species, facilitating the delimitation of taxa. In addition, illustrations, descriptions, comments, and geographical distribution data were provided.

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Made available in DSpace on 2021-06-25T12:37:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-02-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) The Dalbergioid Adesmia Glade comprises Adesmia DC., Amicia Kunth, Nissolia Jacq., Poiretia Vent., and Zornia J. F. Gmel., all predominantly South American genera except for Zornia which has a pantmpical distribution. These taxa share a shrubby or herbaceous habit with glands present on some part of the plant (e.g., stems, leaflets). However, the evolutionary relationships of the full range of secretory structures observed in previous studies are not fully understood. Thus, the goal of this study is to characterize and compare the occurrence and morphology of these glands in leaflets of species of the Adesmia clade. In addition, secretory structures were showed in a phylogenetic context in members of the Adesmia clade. The mature subterminal leaflets of 81 taxa, 79 from the Adesmia clade and two species of the Ptemcarpus clade, were sampled from herbaria and living specimens. All genera of the Adesmia clade shared the presence of secretory, mucilaginous idioblasts in the epidermis of their leaflets. Genera of the clade inhabit dry environments, including open areas and highland grasslands (e.g., Savanna, Patagonian steppe, and the Andes). The presence of mucilage in the epidermis of these genera might be an adaptation to reduce water loss through transpiration, providing a hydrophilic interface between the leaflet surface and the environment, protecting plants from intensive radiation. Phenolic idioblasts were found in the mesophyll of Amicia and Zornia. Secretory cavities were observed in Amicia, Poiretia and Zornia. The occurrence of secretory cavities only in these three phylogenetically closely related genera is considered a synapomorphic character as shown by our character reconstruction analysis. The presence of secretory idioblasts is a unifying characteristic of all genera of the Adesmia clade. UNESP, IBB, Dept Bioestat Biol Vegetal Parasitol & Zool, Setor Bot, Caixa Postal 510, BR-18618970 Botucatu, SP, Brazil CSIC, Real Jardin Bot, Madrid 28014, Spain Univ Copenhagen, Dept Geosci & Nat Resource Management, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark Univ Fed Rio Grande do Sul, Inst Biociencias, Dept Bot, BR-91501970 Porto Alegre, RS, Brazil Royal Bot Gardens, Comparat Plant & Fungal Biol Dept, Richmond TW9 3AE, Surrey, England Univ Estadual Campinas, Inst Biol, Dept Biol Vegetal, Rua Monteiro Lobato 255, BR-13083862 Campinas, SP, Brazil IF Goiano, Inst Fed Goiano, Campus Urutai Rod Geraldo Silva Nascimento,Km-2,5, BR-75790000 Urutai, Go, Brazil Missouri Bot Garden, 4344 Shaw Blvd, St Louis, MO 63110 USA Univ Fed Pelotas, IB, Dept Bot, Caixa Postal 354, BR-96010900 Pelotas, RS, Brazil Smithsonian Inst, NMNH, US Natl Herbarium US, Dept Bot, MRC 166,10th & Constitut Ave, Washington, DC 20560 USA Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, Av Do Cafe S-N, BR-14040903 Ribeirao Preto, SP, Brazil UNESP, IBB, Dept Bioestat Biol Vegetal Parasitol & Zool, Setor Bot, Caixa Postal 510, BR-18618970 Botucatu, SP, Brazil CNPq: 457911/2013-1 CNPq: 400567/2016-4 CNPq: 302806/2019-9 FAPESP: 06/61648-4 FAPESP: 2015/13386-0 FAPESP: Tematico - 00/12469-3 CNPq: 563550/2010-4 CAPES: 8887.373155/2019-00 CAPES: 001

The previous infrageneric classification of Mucuna (Leguminosae, Papilionoideae) recognized two subgenera, M. subg. Mucuna and M. subg. Stizolobium, but that classification is not supported fully by molecular phylogenetic analyses, which reveal three main clades in Mucuna (rather than the traditional two). A new taxon M. subg. Macrocarpa is proposed based on the results of a molecular phylogenetic analysis, supported by fruit characters and biogeography. Historically, the representatives of this new subgenus were considered as members of M. subg. Mucuna, but species of subgenus Macrocarpa differ from species of the other two subgenera by their longer ovaries containing a higher number of ovules and, consequently, longer pods containing more seeds, and by the different fruit length to width ratio. This study presents a new infrageneric classification of the genus Mucuna. The six species of M. subg. Macrocarpa are reviewed, and species descriptions, typifications (including five new lectotypes), a ...

Zornia melanocarpa, a new species of Leguminosae (Papilionoideae, Dalbergieae) from Serra do Espinhaco, Minas Gerais, Brazil, is described and illustrated. The species is characterized by black fruits with white hairs and an absence of bristles, characters unique within the genus. The species is morphologically similar to Z. crinita and Z. hebecarpa, but differs from both by having a shorter inflorescence of 1.2–4 cm (vs. 10–20 and 8–20 cm in Z. crinita and Z. hebecarpa, respectively) and in the size of the plant (7–16 cm vs. 20–60 cm in Z. crinita and Z. hebecarpa), in addition to the black fruits with white hairs. A phylogenetic analysis using molecular data from the nuclear rDNA ITS gene region was performed to verify its position within the genus. Additionally, a survey of leaflet secretory structures and a micro-morphological analysis of fruit structures using scanning electron microscopy (SEM) was performed for the newly described species.

In the original version of this article unfortunately some symbols did not appear in the plates caused by technical problems of the journal. We apologize for any inconvenience caused.

Made available in DSpace on 2018-12-11T17:22:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-08-01 Made available in DSpace on 2018-12-11T17:22:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-08-01 Made available in DSpace on 2018-12-11T17:22:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-08-01 Recent molecular phylogenetic studies have revealed Chaetocalyx DC. as a paraphyletic genus with Nissolia Jacq. nested within it, based on both nuclear ribosomal and plastid evidence. Considering the morphological similarity among the species of these two genera, which are vegetatively almost indistinguishable, we are here transferring the species of Chaetocalyx to Nissolia. Type information for all accepted species of Nissolia in its new circumscription is presented, including 16 new lectotype designations and the designation of one epitype. Diagnostic characters and information about the geographical distribution of each species are also noted. Nissolia s.l. is now represented by 30 taxa (29 species plus one variety) distributed from North to South America, with two centers of diversity found in Mexico and Brazil. Missouri Botanical Garden P.O.-Box-299 St. Louis Universidade Estadual Do Centro-Oeste (UNICENTRO) Departamento de Biologia, Rua Simeão Varela de Sá, 03, Vila Carli Royal Botanic Garden Edinburgh, 20A Inverleith Row Departamento de Botânica Instituto de Biologia Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Distrito Rubião Junior s.n. Departamento de Botânica Instituto de Biologia Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Distrito Rubião Junior s.n.

Herbal medicines are widely used in Brazil and currently constitute an expanding market. Among the species with the highest number of registration entries is Maytenus ilicifolia Mart. ex Reissek, a plant species native to Brazil that has a high medicinal value.

Made available in DSpace on 2018-11-26T17:54:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-09-01 Dried herbal preparations, based on Zornia latifolia, are commonly sold on web, mainly for their supposed hallucinogenic properties. In this work, we demonstrate that these commercial products contain a different Fabacea, i.e., Stylosanthes guianensis, a cheaper plant, widely cultivated in tropical regions as a fodder legume. We were provided with plant samples of true Zornia latifolia from Brazil, and carried out a thorough comparison of the two species. The assignment of commercial samples was performed by means of micro-morphological analysis, DNA barcoding, and partial phytochemical investigation. We observed that Z. latifolia contains large amounts of flavonoid di-glycosides derived from luteolin, apigenin, and genistein, while in S. guianensis lesser amounts of flavonoids, mainly derived from quercetin, were found. It is likely that the spasmolytic and anxiolytic properties of Z. latifolia, as reported in traditional medicine, derive from its contents in apigenin and/or genistein. Univ Genoa, Dipartimento DISTAV, Corso Europa 26, I-16132 Genoa, Italy Univ Estadual Paulista, Dept Bot, Botucatu, SP, Brazil Univ Milano Bicocca, Dipartimento Biotecnol & Biosci, I-20126 Milan, Italy Univ Genoa, CEBR, Viale Benedetto 15 5, I-16132 Genoa, Italy Univ Piemonte Orientale, Dipartimento Sci & Innovaz Tecnol, Viale T Michel 11, I-15121 Alessandria, Italy Univ Estadual Paulista, Dept Bot, Botucatu, SP, Brazil

Made available in DSpace on 2016-07-07T12:33:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2014. Added 1 bitstream(s) on 2016-07-07T12:42:59Z : No. of bitstreams: 1 ISSN0370-6583-2014-65-04-885-916.pdf: 20482701 bytes, checksum: 73c1998d84af3c6d0860f561aa04604f (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG) Eriosema, compreendendo 150 espécies, possui distribuição pantropical, e apresenta dois principais centros de diversidade, um na África e outro nas Américas. Atualmente 38 espécies são registradas para a região Neotropical, das quais 30 encontram-se no Brasil. O presente trabalho consiste no tratamento taxonômico das espécies de Eriosema na região Sudeste do Brasil onde foram registrados 26táxons: Eriosema benthamianum, E. campestre var. campestre, E. campestre var. macrophyllum, E. congestum, E. crinitum, E.defoliatum, E. floribundum, E.glabrum, E. glaziovii, E.hatschbachii, E.heterophyllum, E. longiflorum, E. longifolium, E. obovatum, E.platycarpon, E.prorepens, E.pycnanthum, E.riedelii, E.rigidum, E.rufum var. macrostachyum, E. rufum var. rufum, E. simplicifolium, E. stenophyllum, E. strictum, E. tacuaremboense. e E. tozziae. Uma nova ocorrência é apresentada para o Sudeste, E. tacuaremboense, além da descoberta de duas espécies novas, E. hatschbachii e E. tozziae. Eriosema, comprising about 150 species, has a pantropical distribution, with two main centres of diversity, one in Africa and the other in the Americas. Currently 38 species are recorded for the Neotropics, of which 30 occur in Brazil. This work consists of the taxonomic treatment of the species of Eriosema in Southeastern Brazil. In this study, 26 taxa were recorded: Eriosema benthamianum, E. campestre var. campestre, E.campestre var. macrophyllum, E.congestum, E.crinitum, E. defoliatum, E. floribundum, E.glabrum, E. glaziovii, E.hatschbachii, E.heterophyllum, E.longiflorum, E.longifolium, E. obovatum, E.platycarpon, E.prorepens, E. pycnanthum, E.riedelii, E.rigidum, E.rufum var. macrostachyum, E.rufum var. rufum, E.simplicifolium, E.stenophyllum, E.strictum, E. tacuaremboense and E. tozziae. A new occurrence is cited for southeastern Brazil, E. tacuaremboense, besides the discovery of two new species, E. hatschbachii and E. tozziae. Universidade Federal de Ouro Preto (UFOP), Ouro Preto, MG, Brasil Universidade Estadual de Campinas (UNICAMP), Instituto de Biologia, Campinas, SP, Brasil Prefeitura Municipal de Mariana, Mariana, MG, Brasil Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Instituto de Biociências (IBB), Departamento de Botânica, Botucatu, SP, Brasil Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Instituto de Biociências (IBB), Departamento de Botânica, Botucatu, SP, Brasil FAPEMIG: APQ-02323-12

Eriosema hatschbachii, a new species of Leguminosae (Papilionoideae) from Minas Gerais, Brazil, is described and illustrated. The taxon is morphologically similar to E. floribundum Benth. and E. pycnanthum Benth. var. pycnanthum, but differs mainly in having many parallel secondary veins on the leaflets (similar to the venation seen on nearly all species of the genus Tephrosia) and erect stems with leaves only near the apex.

The genus Zornia has a pantropical distribution and comprises 80 species in two subgenera (Myriadena, Zornia) and three sections (Zornia, Isophylla, Anisophylla). The genus is characterized mainly by flowers arranged in a spiciform inflorescence, with paired peltate bracteoles protecting each flower, and stipules that resemble the bracteoles. Phylogenetically Zornia is a member of the informal Adesmia clade of the Dalbergioid group, being most closely related to the predominantly South American genera Poiretia and Amicia. Phylogenetic analyses of DNA sequence data from the internal transcribed spacer region of nuclear ribosomal DNA and the plastid trnL-trnF intron and spacer, including multiple accessions of species of all subgenera and sections, support the monophyly of Zornia and indicate that Poiretia is sister to Zornia. All traditional subgenera and sections of Zornia are resolved as paraor polyphyletic in our study. Nevertheless, two major clades can be recognized. Time-calibrated phylogenetic analyses suggest that most Zornia species diverged 8–10 Ma and reveal that only one migratory event occurred within the genus ca. 5 Ma from America to the Old World probably via long-distance dispersal.