Search

Deprea sapalachense (Solanaceae), a new species from northern Peru, is described and illustrated in detail. Deprea sapalachense S. Leiva & Barboza is found in Chorro Blanco, Sapalache-El Carmen de la Frontera road km 6, 5°07'29.9" S 79°22'53.0" W, 2740 m of elevation. It can be recognized because it has 2 (-3) flowers per node, corolla tube developed and glabrous internally, staminal filaments homodynamous, berry conical, orange when mature, 10-11 mm long and 11-12 mm of diameter, fructiferous calyx appressed wrapping tightly the berry in all its lenght, (31-) 50-67 seeds per berry, 20-22 sclerosomes per berry, shrubs 1-1.40 m tall. We include data of its relation with other similar species, geographic distribution, ecology, phenology, current status, common name and uses of the species. [ABSTRACT FROM AUTHOR]

Confluence of ethnomedical experiences and use of medicinal plants of practitioners native to Translasierra Valley (San Javier Department), Córdoba, Argentina. The valley named as Valle de Traslasierra extends over the western mountainside of the Sierras de Los Comechingones hills. Its characteristic distance from large cities changed qualitatively due to major migration flows. This study aims at characterizing the ethnomedicine and natural pharmacopoeia in the region. We followed qualitative and quantitative methods representative of the ethnobotanical approach. We evidenced a vast and varied therapeutics exerted by native practitioners with a total of 676 medicinal uses corresponding to 231 taxa and 84 botanical families. An analysis of frequency of uses and taxa was also carried out through descriptive statistics. The families with higher number of cited taxa and medicinal use are Asteraceae, Lamiaceae, Fabaceae, Rosaceae and Verbenaceae. The most commonly found applications were those related to gastrointestinal disorders, followed by those related to pneumology and cardiology. From the taxa with the largest number of applications, 60% comprise introduced species and 40% consist of wild native species. Finally, the narratives show that native practitioners, while keeping alive practices based on popular medical knowledge, they have incorporated various therapeutic practices and representations, especially from alternative medicine, thus forming a vast natural pharmacopoeia with multiple meanings, typical of multicultural contexts. [ABSTRACT FROM AUTHOR]

Deprea micrantha (Solanaceae), a new species from Ecuador, is described and illustrated in detail. Deprea micrantha Barboza & S. Leiva is found in San Francisco Biological Reserve, km 274½ between El Tambo and Sabanilla (Zamora-Loja route), province of Zamora Chinchipe, Ecuador, between 1874-1922 m of elevation. We include data concerning its relation with other similar species, geographic distribution, ecology, phenology, current status, common name and uses of the species. [ABSTRACT FROM AUTHOR]

On the occasion of preparing the Flora of Cordoba, new records for the Argentinean flora have been registered as a result of intensive field trips and the revision of the main herbaria collections of the country. In this paper, three new records for the native flora and 17 for the introduced flora (casual aliens and naturalized species) of Argentina are presented. Descriptions, illustrations and a lectotypification are done. Furthermore, the presence of 10 introduced species is formally documented for the first time. [ABSTRACT FROM AUTHOR]

Deprea auccana S. Leiva, Barboza & Deanna and D. physalidicalyx Leiva, Barboza & Deanna (Solanaceae) are described and illustrated. Deprea auccana inhabits Abra Patricia Private Reserve (ECOAN, Pomacochas-Nueva Cajamarca road, District Yambrasbamba, Prov. Bongará, Dept. Amazonas, Peru). This species is distinguished by the shape and size of its leaves, number of flowers per node, length of calyx lobes, homodynamous stamens, and its erect fruits with a fruiting accrescent calyx bipartite when mature. Deprea physalidicalyx S. Leiva, Barboza & Deanna inhabits in the Aguashiyacu waterfall (Tarapoto-Juanjuí road, Prov. Tarapoto, Dept. San Martín, Peru) and it is characterized by the corolla lobes deep purple on the middle and cream on the margins internally, homodynamous stamens, and the creamy berry when mature loosely enveloped by a fruiting calyx very accrescent and inflated, 3.5-4 cm long, 2.3-2.7 cm diameter. Data about geographic distribution, ecology, phenology, conservation assessment and differences with related species are included. [ABSTRACT FROM AUTHOR]

As part of an integral study of fruits belonging to native argentinean species of Lamiaceae, we conducted a research of Lepechinia Willd. native species (Lamiaceae-Nepetoideae-Mentheae). The aim of the present investigation was to perform a detailed morphohistological fruit characterization of L. floribunda, L. meyenii and L. vesiculosa and evaluate the possible taxonomic value of these characters. We worked with fresh and herbarium material. The observations were made with light microscopy and scanning electron microscopy. Shape, color and presence of the abscission scar waxes were the exomorphological diagnostic characters while abscission scar shape and position, and the surface SEM view of nutlets did not show differences for all three species. In terms of histology, L. floribunda and L. meyenii have similar pericarp structure, differing only by the thickness of the layers. In contrast, L. vesiculosa shows differences at the mesocarp. [ABSTRACT FROM AUTHOR]

Solanum delicatulum, a species only known to southern Brazil, is reported for the first time for Argentina and Paraguay. The species is described and illustrated, and a discussion about its synonymy is also provided. [ABSTRACT FROM AUTHOR]

A comparative study of the leaf anatomy of 10 species of Plantago L. (Plantaginaceae) from Central Argentina was carried out. The analysis included the study of the foliar epidermis, cuticle, stomata and trichomes; a classification of eglandular and glandular trichomes was stablished and original data of the mesophyll structure in 8 species were given as well. Besides, a key based exclusively on leaf features was provided. The results were discussed and evaluated from a taxonomical point of view. [ABSTRACT FROM AUTHOR]

Lycianthes (Dunal) Hassler is accepted as a genus more closely related to Capsicum L. and Witheringia L'Heritier, rather than to Solanum L.; the evidences are based on the structure and the inervation of the calyx. With a tropical and subtropical range, the genus is represented in the northern part of the Argentinian territory by the following 5 species: L. asarifolia (Kunth et Bouché) Bitter, L. australe (Morton) A. T. Hunz. et Barboza nov. comb., L. lycioides (L.) Hassler, L. rantonnei (Carrière) Bitter and L. saltensis Bitter. The key to facilitate the identification of these species includes androecium characters hitherto not mentioned in the literature, vgr.: heterodynamous versus homodynamous stamens, filaments with or without a basal hump in its free portion, etc. These characters, together with the remaining ones that are useful for the specific delimitation, are thoroughly discussed in the text. [ABSTRACT FROM AUTHOR]

Taxonomic survey of Aureliana Sendtner, a small neotropical genus of 5 species: A. fasciculata (Vellozo) Sendt. [with 3 varieties: var. fasciculata, var. tomentella (Sendt.) Barboza et A. T. Hunz. nov. comb., and var. longifolia (Sendt.) A. T. Hunz. et Barboza nov. comb.], A. brasillana (A. T. Hunz.) Barboza et A. T. Hunz. nov. comb., A. tomentosa Sendt., A. velutina Sendt. and A. wettsteiniana (Witas.) A. T. Hunz. et Barboza nov. comb. The 7 taxa grow in Brazil, but 3 of them deserve a special mention: A. fasciculata var. tomentella reaches southeastern Paraguay and Argentina (eastern Misiones); instead A. fasciculata var. longifolia and A. fasciculata var. fasciculata show a rather peculiar distribution because aside of their eastern area, both have been collected in Bolivia (Santa Cruz and Pando). After a discussion on the complicated taxonomical history of the genus, the authors point out its relationships with 6 allied genera of the Solaneae, above all with Capsicum L.; a key to identify these 7 genera is included as well. Each taxon is described together with remarks about their geographical distribution and affinities. Five plates and a map are included in the text. [ABSTRACT FROM AUTHOR]

Persicaria capitata (Polygonaceae, Polygonoideae, Persicarieae), a species native from Nepal, and the genus Persicaria, are newly recorded for the introduced flora of Argentina. This species occurs in different habitats at the Natural Reserve La Cumbrecita (province of Córdoba). A detailed species description and a discussion about its status in the naturalization process are included. [ABSTRACT FROM AUTHOR]

Salpichroa weigendii (Solanaceae), a new species from Huanuco Region, Peru, is described and illustrated in detail. S. weigendii S. Leiva, Jara & Barboza is characterized by having glabrous corolla externally and internally, corolla limb reflex, androecium included, staminal filaments flattened, glabrous, anthers whitish, nectariferous disc red, berries intense purple or black when mature, seeds black, 16-20 per berry, fructiferous calyx covers almost the quarter basal of the berry, style 9-9.5 mm long, shrub 2-2.5 m of length. In addition to the description, we present the respective illustration, we discuss its relations with an allied species and we include data about ethnobotany, geographic distribution, ecology, phenology, current status and uses of the species. [ABSTRACT FROM AUTHOR]

Salpichroa salpoensis (Solanaceae), a new species from La Libertad and Cajamarca region, Peru, is described and illustrated in detail. Salpichroa salpoensis S. Leiva is characterized by having calyx and corolla densely pubescent outside with simple and bifurcate non-glandular trichomes, corolla tube glabrous within, androecium and gynoecium included, staminal filaments slightly broadened at the apex, style and ovary with short trichomes, and berries intensely purple or black when mature. In addition to the description, we present the respective illustration, we discuss its relationships with allied species and we include data about geographic distribution, ecology, phenology, current status and uses of the species. [ABSTRACT FROM AUTHOR]

Deprea sawyeriana subsp. valladolidana Deanna, Barboza & S. Leiva is described on the basis of its morphological variations and its disjunt Ecuadorian distribution. Description and conservation assessment of Deprea sawyeriana are updated. [ABSTRACT FROM AUTHOR]

This study provides information on the diversity and distribution patterns of Salpichroa species along the Andes. We analyzed a database of 855 georeferenced herbarium collections, of a total of 1205 studied specimens, of which 99% came from Peru, Ecuador, and Argentina. Twenty two species are recognized, of which 19 are found in Peru, the country with the greatest diversity of Salpichroa, compared to Bolivia (8), Ecuador (5), Argentina (4), Chile (3), Colombia (2), Venezuela (2), Uruguay (1), Paraguay (1), and Brazil (1). In general, Salpichroa is distributed between 30° N and 37° S, with the highest species richness between 7° S and 17° S in Peru. Within Peru, the highest concentration of species is found in the department of Cusco. The greatest species diversity is found between 3000-4000 m elevation on both the eastern and western slopes of the Andes. The high diversity of the genus in the Peruvian Andes is likely due to the high environmental heterogeneity and habitat diversity present in the area. [ABSTRACT FROM AUTHOR]

Heterogenity of the vegetation of basaltic environments in central Argentina. The flora and the vegetation of basaltic outcrops of Los Cóndores Mountains, central Argentina, are described. Plant communities were sampled following the Braun-Blanquet methods. The 98 relevés × 272 species matrix was classified through the ISOPAM method. The classification discriminated three main communities occurring in the three different substrates explored in this landscape: Rocky Islands (inselbergs), a Natural Matrix surrounding the Islands and an Agricultural Matrix, surrounding the whole basaltic area. The three communities differed in composition and physiognomy: the Islands were the less disturbed sites, reporting the highest plant species richness and diversity as well as the higher number of endemics, and the lowest number of exotic species. In the other extreme of the disturbance gradient, the Agricultural Matrix showed the opposite patterns and is dominated by annual and perennial herbs, mainly weeds. While the number of aliens is low in the Islands and in the Natural Matrix, almost 50% of the species are exotic in the Agricultural Matrix. The results of this study reveal that the basaltic inselbergs are relevant sites for the conservation of the natural heritage. [ABSTRACT FROM AUTHOR]

The flora and the vegetation of basaltic outcrops were studied in central Argentina. Coverabundance scores were recorded for 303 plant species in 48 relevés distributed in four outcrop locations ranging between 400 to 900 m asl. The association between the floristic composition and climatic variables were explored through an ordination analysis, and the vegetation of the outcrops was classified into four major types through a classification technique. The floristic composition of the outcrops was significantly associated to climate at the regional scale and the four sites differed in species richness, diversity and dominance. We conclude that well conserved basaltic outcrops from central Argentina are relevant habitats for the conservation of endemic species and over exploited taxa. [ABSTRACT FROM AUTHOR]

Two new records of Polystichum (Dryopteridaceae) for the Argentine Flora. In this paper, two new records for the Argentina fern-flora are reported: P. subintegerrimum (Hook. & Arn.) R. Rodr. found in the Patagonian Forests and P. platylepis Fée collected in Misiones; both have been considered endemic for Chile and Brazil, respectively. The species are described and illustrated. [ABSTRACT FROM AUTHOR]

Vegetation of carbonate outcrops in mountains of central Argentina. In mountains of Central Argentina, which have severe fragmentation and replacement of natural vegetation, rocky outcrops are important habitats for biodiversity conservation, as refuges for endemic and rare species. In this paper, we explore the local compositional variation of vegetation in calcium and dolomitic outcrops of Sierras de Córdoba and compare associations between different geochemical types and floristic composition along a local altitudinal gradient. Four adjacent outcrops of different geochemical types located in different positions in a local elevation gradient from 1000 to 1800 m.a.s.l. were selected and cover-abundance of all vascular plants at 216 rélevés, was estimated. Significative differences of compositional vegetation attributes occurred between the different lithologies and altitudinal strata. At the local scale, the floristic composition appeared related to the geochemical typology of outcrops and this pattern is overlapped with altitude. It was possible to establish relationships between the presence of different vascular plants and different types of calcitic and dolomitic rocks, independently of their position in the altitudinal gradient. The importance of these variables in structuring the habitat and filtering of species is confirmed, and its importance in looking for priorities in conservation of these singular habitats. [ABSTRACT FROM AUTHOR]