18 results on '"bisexuales"'
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2. Relación entre el crecimiento y la inversión sexual en Pagellus erythrinus
- Author
-
Gómez-Larrañeta, Manuel and Gómez-Larrañeta, Manuel
- Abstract
El pagel suele presentar gonadas de uno u otro sexo y, a veces, simultáneamente ovarios y testículos, interpretándose que los bisexuales son individuos en inversión sexual según una proteroginia. A grandes rasgos puede decirse que, aproximadamente el 95 % de los pageles se inician como hembras y luego la mitad se transforman en maohos. En un trabajo del autor publicado en el tomo 27 de Investigación Pesquera (1964), y titulado "Sobre la biología de Pagellus erythrinus (L.j especialmente del de las costas de Castellón", se exponían los resultados sobre las observaciones de la frecuencia de pageles bisexuales y de ambos sexos. [...]
- Published
- 1965
3. Notes on Malay Compositae III
- Author
-
Koster, (Joséphine Th.) and Koster, (Joséphine Th.)
- Abstract
Among a small collection of Compositae collected in Sumbawa by R. Blomberg, 1941, a new Vernonia was detected. The description follows here. Vernonia sumbavensis Koster, nov. spec. — sectio Claotrachelus (Zoll. et Mor.) Koster (Fig. 1 a—e) — Herba, 60 cm alta, e basi caules plures virgatos, subteretes, striatos, incane villoso-tomentosos, 2—4 mm crassos emittens; internodiis ½2–3 cm longis. Radix ramosa, crassa. Folia alterna, sessilia, numerosa, linearia vel lineario-lanceolata, margine parce revoluta, repande et breviter dentata vel subintegra, apice acuta, utrinque gradatim longe attenuata, pinninervia, nervo mediano et nervis lateralibus subtus prominentibus, supra obscura scabra, leviter incano-tomentosa vel subglabra, subtus incane tomentosa, chartacea, 3½—7½ cm longa, 3—7 mm lata, superiora minora; saepe ramis brevissimis in axillis foliorum folia parva ferentes. Inflorescentia terminalis, corymbosa, 5—12 cm lata; capitula numerosa, pedunculata, campanulata, 25—35-flora, circa 1 cm longa, circa 8 mm crassa, pedunculis incane villoso-tomentosis, 2—10 mm longis, interdum apice vel ad basin bractea lineari minuta praedita; involucrum campanulatum, circa 8 mm longum, squamis 5—6-seriatis, externe gradatim brevioribus, dense incane pubescentibus, interioribus anguste oblongis, interdum purpurascentibus, apice breviter acicularibus, exterioribus squarrosis, lanceolatis, apice acicularibus; receptaculum nudum, alveolatum, glabrum, alveolis cupuliformibus; flores bisexuales, corolla infundibuliformis, 8— 10 mm longis, lobis 5, oblongo-triangularibus, apice subacutis, parce hirsutis; antherae ad basin sagittatae, apice obtusae; styli rami longi, acuti, hirsuti; achenium turbinatum, 5—6-amgulatum, dense glandulosum, circa 1½ mm longum; pappus biseriatus, setaceus, setis albis, interioribus caducis, scabris, 5—8 mm longis, exterioribus brevissimis, applanatis.
- Published
- 1952
4. Paramapania, genus Novum asiaticum Cyperacearum
- Author
-
Uittien, H. and Uittien, H.
- Abstract
Genera Mapania, Hypolytrum, Thoracostachyum valde cognata sunt. Quamvis enim adhuc diversa sit botanicorum sententia de structura florum huius tribus morphologice interpretanda, de hac re omnes consentiunt, squamellas laterales binas generis Hypolytri, sive sepala sive glumas floriferas vocandas, squamellis exterioribus Mapaniae et Thoracostachyi homologas esse. F. Pax solum, qui cum nonnullis aliis auctoribus Thoracostachyum cum Mapania iungendo systema Benthamianum et Hookerianum secutus est, tertium genus, cui solo flores bisexuales ascribit, longe disiunxit. Conspectus generum usitatus ut in Hook. f., Fl. Brit. Ind. VI, p. 586, ubi C. B. Clarke Cyperaceas disposuit, ita fert: A. Spicula capitata .............................. Mapania B. Spicula corymboso-paniculata. 1. Stylus bifidus ...................... Hypolytrum. 2. Stylus trifidus ................. Thoracostachyum. Hic conspectus autem numero specierum cognitarum sensim augente quibusdam vitiis laborare apparet. Corymbos a capitibus diiudicare non semper facile. Discrimen a numero styli ramorum sumptum incertum, quia in eodem genere sicut in Scirpo et in Carice, quin etiam in eadem specie, saepe mutari cernitur. Praeterea speciebus spicula singula praeditis nullum genus hospitium praebere videtur.
- Published
- 1935
5. Notes on Malay Compositae III
- Author
-
Koster, J.Th. (Joséphine) and Koster, J.Th. (Joséphine)
- Abstract
Among a small collection of Compositae collected in Sumbawa by R. Blomberg, 1941, a new Vernonia was detected. The description follows here. Vernonia sumbavensis Koster, nov. spec. — sectio Claotrachelus (Zoll. et Mor.) Koster (Fig. 1 a—e) — Herba, 60 cm alta, e basi caules plures virgatos, subteretes, striatos, incane villoso-tomentosos, 2—4 mm crassos emittens; internodiis ½2–3 cm longis. Radix ramosa, crassa. Folia alterna, sessilia, numerosa, linearia vel lineario-lanceolata, margine parce revoluta, repande et breviter dentata vel subintegra, apice acuta, utrinque gradatim longe attenuata, pinninervia, nervo mediano et nervis lateralibus subtus prominentibus, supra obscura scabra, leviter incano-tomentosa vel subglabra, subtus incane tomentosa, chartacea, 3½—7½ cm longa, 3—7 mm lata, superiora minora; saepe ramis brevissimis in axillis foliorum folia parva ferentes. Inflorescentia terminalis, corymbosa, 5—12 cm lata; capitula numerosa, pedunculata, campanulata, 25—35-flora, circa 1 cm longa, circa 8 mm crassa, pedunculis incane villoso-tomentosis, 2—10 mm longis, interdum apice vel ad basin bractea lineari minuta praedita; involucrum campanulatum, circa 8 mm longum, squamis 5—6-seriatis, externe gradatim brevioribus, dense incane pubescentibus, interioribus anguste oblongis, interdum purpurascentibus, apice breviter acicularibus, exterioribus squarrosis, lanceolatis, apice acicularibus; receptaculum nudum, alveolatum, glabrum, alveolis cupuliformibus; flores bisexuales, corolla infundibuliformis, 8— 10 mm longis, lobis 5, oblongo-triangularibus, apice subacutis, parce hirsutis; antherae ad basin sagittatae, apice obtusae; styli rami longi, acuti, hirsuti; achenium turbinatum, 5—6-amgulatum, dense glandulosum, circa 1½ mm longum; pappus biseriatus, setaceus, setis albis, interioribus caducis, scabris, 5—8 mm longis, exterioribus brevissimis, applanatis.
- Published
- 1952
6. Paramapania, genus novum asiaticum cyperacearum
- Author
-
H. Uittien and H. Uittien
- Abstract
Genera Mapania, Hypolytrum, Thoracostachyum valde cognata sunt. Quamvis enim adhuc diversa sit botanicorum sententia de structura florum huius tribus morphologice interpretanda, de hac re omnes consentiunt, squamellas laterales binas generis Hypolytri, sive sepala sive glumas floriferas vocandas, squamellis exterioribus Mapaniae et Thoracostachyi homologas esse. F. Pax solum, qui cum nonnullis aliis auctoribus Thoracostachyum cum Mapania iungendo systema Benthamianum et Hookerianum secutus est, tertium genus, cui solo flores bisexuales ascribit, longe disiunxit. Conspectus generum usitatus ut in Hook, f., FI. Brit. Ind. VI,. p. 586, ubi C. B. Clarke Cyperaceas disposuit, ita fert; A. Spicula capitata Mapania B. Spicula corymboso-paniculata. i. Stylus bifidus Hypolytrum. i. Stylus trifidus Thoracostachyum. Hic conspectus autem numero specierum cognitarum sensim augente quibusdam vitiis laborare apparet. Corymbos a capitibus diiudicare non semper facile. Discrimen a numero styli ramorum sumptum incertum, quia in eodem genere sicut in Scirpo et in Carice, quin etiam in eadem specie, saepe mutari cernitur. Praeterea speciebus spicula singula praeditis nullum genus hospitium praebere videtur.
- Published
- 1935
7. New Heterothallic species of Hansenula.
- Author
-
Wickerham, Lynferd
- Abstract
As the genus Hansenula is at present constituted, H. fabianii appears to be the first species of its phylogenetic line to have become independent of trees and bark beetles. It is also the last species of its line to occur in nature with the haploid, or basic, number of chromosomes. So near is it to the diploid level of evolution that a sporulation medium rich in malt extract favors the development of diploid vegetative cells in the period between conjugation of opposite sexes and the onset of sporulation. The diploid form is easily isolated from the mixture and, as long as sporulation is prevented, may be kept in pure state. Media that favor vegetative development of the species favor its occurrence as haploid vegetative cell. H. fabianii is most closely related to Hansenula subpelliculosa Bedford, which occurs in nature as the diploid form. Both species have been isolated almost exclusively as contaminants of fermentations, and both have been used industrially in Oriental fermentations to make alcoholic beverages or foods. [ABSTRACT FROM AUTHOR]
- Published
- 1965
- Full Text
- View/download PDF
8. Studien über kritische Arten der Grattungen Gymnomitrium und Marsupella.
- Author
-
Schiffner, Victor
- Published
- 1903
- Full Text
- View/download PDF
9. Monographic Sketch of the Durioneæ.
- Author
-
Masters, Maxwell T.
- Published
- 1875
- Full Text
- View/download PDF
10. THE NEW SPECIES OF <em>CHLAMYDOMONAS</em>.
- Author
-
Uhlik, David J. and Bold, Harold C.
- Subjects
CHLAMYDOMONAS ,CHLAMYDOMONADACEAE ,REPRODUCTION ,PLANT clones ,PHYCOLOGY ,BOTANY - Abstract
Two new species of Chlamydomonas, C. surtseyiensis and C. archibaldii, are described as is their sexual reproduction which occurs in clonal culture. [ABSTRACT FROM AUTHOR]
- Published
- 1970
- Full Text
- View/download PDF
11. Neue oder pflanzengeographisch beachtenswerte Cyperaceenfunde aus dem malayischen und papuanischen Gebiet.
- Author
-
Kükenthal, Georg
- Published
- 1944
- Full Text
- View/download PDF
12. Relación entre el crecimiento y la inversión sexual en Pagellus erythrinus
- Author
-
Larrañeta, M. G.
- Abstract
Quinta Reunión sobre Producción Marina y Explotación Pesquera en la sede del Intituto de Investigaciones Pesqueras (IIP-CSIC) de Barcelona, celebrada del 24 al 29 de abril de 1965.-- 3 pages, El pagel suele presentar gonadas de uno u otro sexo y, a veces, simultáneamente ovarios y testículos, interpretándose que los bisexuales son individuos en inversión sexual según una proteroginia. A grandes rasgos puede decirse que, aproximadamente el 95 % de los pageles se inician como hembras y luego la mitad se transforman en maohos. En un trabajo del autor publicado en el tomo 27 de Investigación Pesquera (1964), y titulado "Sobre la biología de Pagellus erythrinus (L.j especialmente del de las costas de Castellón", se exponían los resultados sobre las observaciones de la frecuencia de pageles bisexuales y de ambos sexos. [...]
- Published
- 1965
13. Notes on Malay Compositae III
- Abstract
Among a small collection of Compositae collected in Sumbawa by R. Blomberg, 1941, a new Vernonia was detected. The description follows here. Vernonia sumbavensis Koster, nov. spec. — sectio Claotrachelus (Zoll. et Mor.) Koster (Fig. 1 a—e) — Herba, 60 cm alta, e basi caules plures virgatos, subteretes, striatos, incane villoso-tomentosos, 2—4 mm crassos emittens; internodiis ½2–3 cm longis. Radix ramosa, crassa. Folia alterna, sessilia, numerosa, linearia vel lineario-lanceolata, margine parce revoluta, repande et breviter dentata vel subintegra, apice acuta, utrinque gradatim longe attenuata, pinninervia, nervo mediano et nervis lateralibus subtus prominentibus, supra obscura scabra, leviter incano-tomentosa vel subglabra, subtus incane tomentosa, chartacea, 3½—7½ cm longa, 3—7 mm lata, superiora minora; saepe ramis brevissimis in axillis foliorum folia parva ferentes. Inflorescentia terminalis, corymbosa, 5—12 cm lata; capitula numerosa, pedunculata, campanulata, 25—35-flora, circa 1 cm longa, circa 8 mm crassa, pedunculis incane villoso-tomentosis, 2—10 mm longis, interdum apice vel ad basin bractea lineari minuta praedita; involucrum campanulatum, circa 8 mm longum, squamis 5—6-seriatis, externe gradatim brevioribus, dense incane pubescentibus, interioribus anguste oblongis, interdum purpurascentibus, apice breviter acicularibus, exterioribus squarrosis, lanceolatis, apice acicularibus; receptaculum nudum, alveolatum, glabrum, alveolis cupuliformibus; flores bisexuales, corolla infundibuliformis, 8— 10 mm longis, lobis 5, oblongo-triangularibus, apice subacutis, parce hirsutis; antherae ad basin sagittatae, apice obtusae; styli rami longi, acuti, hirsuti; achenium turbinatum, 5—6-amgulatum, dense glandulosum, circa 1½ mm longum; pappus biseriatus, setaceus, setis albis, interioribus caducis, scabris, 5—8 mm longis, exterioribus brevissimis, applanatis.
- Published
- 1952
14. Paramapania, genus Novum asiaticum Cyperacearum
- Abstract
Genera Mapania, Hypolytrum, Thoracostachyum valde cognata sunt. Quamvis enim adhuc diversa sit botanicorum sententia de structura florum huius tribus morphologice interpretanda, de hac re omnes consentiunt, squamellas laterales binas generis Hypolytri, sive sepala sive glumas floriferas vocandas, squamellis exterioribus Mapaniae et Thoracostachyi homologas esse. F. Pax solum, qui cum nonnullis aliis auctoribus Thoracostachyum cum Mapania iungendo systema Benthamianum et Hookerianum secutus est, tertium genus, cui solo flores bisexuales ascribit, longe disiunxit. Conspectus generum usitatus ut in Hook. f., Fl. Brit. Ind. VI, p. 586, ubi C. B. Clarke Cyperaceas disposuit, ita fert: A. Spicula capitata .............................. Mapania B. Spicula corymboso-paniculata. 1. Stylus bifidus ...................... Hypolytrum. 2. Stylus trifidus ................. Thoracostachyum. Hic conspectus autem numero specierum cognitarum sensim augente quibusdam vitiis laborare apparet. Corymbos a capitibus diiudicare non semper facile. Discrimen a numero styli ramorum sumptum incertum, quia in eodem genere sicut in Scirpo et in Carice, quin etiam in eadem specie, saepe mutari cernitur. Praeterea speciebus spicula singula praeditis nullum genus hospitium praebere videtur.
- Published
- 1935
15. Notes on Malay Compositae III
- Author
-
Koster, Joséphine and Naturalis journals & series
- Abstract
Among a small collection of Compositae collected in Sumbawa by R. Blomberg, 1941, a new Vernonia was detected. The description follows here. Vernonia sumbavensis Koster, nov. spec. — sectio Claotrachelus (Zoll. et Mor.) Koster (Fig. 1 a—e) — Herba, 60 cm alta, e basi caules plures virgatos, subteretes, striatos, incane villoso-tomentosos, 2—4 mm crassos emittens; internodiis ½2–3 cm longis. Radix ramosa, crassa. Folia alterna, sessilia, numerosa, linearia vel lineario-lanceolata, margine parce revoluta, repande et breviter dentata vel subintegra, apice acuta, utrinque gradatim longe attenuata, pinninervia, nervo mediano et nervis lateralibus subtus prominentibus, supra obscura scabra, leviter incano-tomentosa vel subglabra, subtus incane tomentosa, chartacea, 3½—7½ cm longa, 3—7 mm lata, superiora minora; saepe ramis brevissimis in axillis foliorum folia parva ferentes. Inflorescentia terminalis, corymbosa, 5—12 cm lata; capitula numerosa, pedunculata, campanulata, 25—35-flora, circa 1 cm longa, circa 8 mm crassa, pedunculis incane villoso-tomentosis, 2—10 mm longis, interdum apice vel ad basin bractea lineari minuta praedita; involucrum campanulatum, circa 8 mm longum, squamis 5—6-seriatis, externe gradatim brevioribus, dense incane pubescentibus, interioribus anguste oblongis, interdum purpurascentibus, apice breviter acicularibus, exterioribus squarrosis, lanceolatis, apice acicularibus; receptaculum nudum, alveolatum, glabrum, alveolis cupuliformibus; flores bisexuales, corolla infundibuliformis, 8— 10 mm longis, lobis 5, oblongo-triangularibus, apice subacutis, parce hirsutis; antherae ad basin sagittatae, apice obtusae; styli rami longi, acuti, hirsuti; achenium turbinatum, 5—6-amgulatum, dense glandulosum, circa 1½ mm longum; pappus biseriatus, setaceus, setis albis, interioribus caducis, scabris, 5—8 mm longis, exterioribus brevissimis, applanatis.
- Published
- 1952
16. A New Species of Aponogeton (Aponogetonaceae)
- Author
-
W. Marais and A. Jacot Guillarmod
- Subjects
biology ,Botany ,Plant Science ,Aponogeton ,biology.organism_classification ,Ecology, Evolution, Behavior and Systematics - Abstract
Tuber globosum c. 5 mm. diam. Folia submersa, isoetoidea, leviter compressa, 5-10o cm. longa, 3-5-4'5 mm. diam., basi et apice cuneata, viridia. Pedunculus pergracilis, filamentosus, fragilis, usque 2 m. longus, inflorescentiam versus haud incrassatus. Spatha usque I -3 cm. longa inflorescentiam juvenilem omnino includens, infra medium circumscissa, operculo deciduo. Inflorescentia natans, spicam solitariam, abbreviatam, subcapitatam, valde densifloram formans; flores omnifariam dispositi, perianthia floribus inferioribus sterilibus circumcincta. Flores steriles plures, tepalo uno, tandem caduco, 8-io mm. longo, 2-5-4'5 mm. lato, anguste oblonge vel ovato, apice rotundato, albo, tantum instructi. Flores bisexuales c. 8; inferiores tepalis 2 instructis, superiores normaliter sine tepalis, aut tepalo uno eisdem florum sterilium simile provisi. Stamina 6; filamenta 3 mm. longa; antherae
- Published
- 1972
- Full Text
- View/download PDF
17. A New Genus of Ixonanthaceae with Notes on the Family
- Author
-
L. L. Forman
- Subjects
biology ,Botany ,Ixonanthaceae ,Type genus ,Plant Science ,biology.organism_classification ,Ecology, Evolution, Behavior and Systematics - Abstract
Arbor. Folia integra. Stipulae geminae, insertione partim intra-petiolari, citissime caducae. Inflorescentiae thyrsoideae, axillares et pseudo-terminales. Flores bisexuales, pedicellati; sepala 5, imbricata, basi brevissime connata, caduca; petala 5, libera, imbricata, caduca; stamina Io, libera; discus intrastaminalis, collariformis et lobatus; ovarium breviter stipitatum, 5-loculare; ovulum in quoque loculo solitarium, pendulum; stylus simplex; stigma capitellatum. Capsula 5-valvata, septicida, valvis incomplete loculicidis intus haud septiferis; columella centralis persistens, prope apicem processus 5 arilloideos gerens; semina allantoidea, hilo subapicali laterali, testa tenui coriacea, endospermo nullo; embryo magnus, pelliculo tenui tectus, cotyledonibus crassis rectis, radicula superiore.
- Published
- 1965
- Full Text
- View/download PDF
18. Allgemeine Entwickelungsgeschichte der Organismen : Kritische Grundzüge der mechanischen Wissenschaft von den entstehenden Formen der Organismen
- Author
-
Ernst Haeckel and Ernst Haeckel
- Published
- 1866
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