Comparative palynological analysis of Lygodium venustum Sw. and L. volubile Sw. (Lygodiaceae)

The genus Lygodium Sw. is one of the few climbing ferns in the world. The spores of L. venustum Sw. and L. volubile Sw. were studied using light, scanning, and transmission electron microscopy. This work is based on herbarium material. The spores are trilete, triangular, with straight to convex side...

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Detalles Bibliográficos
Autores principales: Ramos Giacosa, Juan Pablo, Morbelli, Marta Alicia, Giudice, Gabriela Elena
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Botánica
Lygodiaceae
Lygodium
Morphology
Spores
Ultrastructure
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85258
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85258
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Botánica
Lygodiaceae
Lygodium
Morphology
Spores
Ultrastructure
spellingShingle Botánica
Lygodiaceae
Lygodium
Morphology
Spores
Ultrastructure
Ramos Giacosa, Juan Pablo
Morbelli, Marta Alicia
Giudice, Gabriela Elena
Comparative palynological analysis of Lygodium venustum Sw. and L. volubile Sw. (Lygodiaceae)
topic_facet Botánica
Lygodiaceae
Lygodium
Morphology
Spores
Ultrastructure
description The genus Lygodium Sw. is one of the few climbing ferns in the world. The spores of L. venustum Sw. and L. volubile Sw. were studied using light, scanning, and transmission electron microscopy. This work is based on herbarium material. The spores are trilete, triangular, with straight to convex sides in polar view. The equatorial diameter is 72-104 μm, and the polar diameter is 64-84 μm. The ornamentation in L. venustum is verrucate-tuberculate while in L. volubile, it is verrucate-tuberculate in the proximal face but with a few ridges on the distal face, where a micro-ornamentation constituted by verrrucae and tubercles is observed. An equatorial ridge is also present. The exospore is two-layered; in L. venustum, it is smooth in contrast with the ornamented exospore of L. volubile. The perispore of the two species analyzed is similar. This wall is four-layered with particular elements arranged radially in the middle layer. On the spores surface of both species, few spheroids are observed. The results introduced in the current study may be useful for the systematics of the genus as well as for phylogenetic purposes.
format Articulo
Articulo
author Ramos Giacosa, Juan Pablo
Morbelli, Marta Alicia
Giudice, Gabriela Elena
author_facet Ramos Giacosa, Juan Pablo
Morbelli, Marta Alicia
Giudice, Gabriela Elena
author_sort Ramos Giacosa, Juan Pablo
title Comparative palynological analysis of Lygodium venustum Sw. and L. volubile Sw. (Lygodiaceae)
title_short Comparative palynological analysis of Lygodium venustum Sw. and L. volubile Sw. (Lygodiaceae)
title_full Comparative palynological analysis of Lygodium venustum Sw. and L. volubile Sw. (Lygodiaceae)
title_fullStr Comparative palynological analysis of Lygodium venustum Sw. and L. volubile Sw. (Lygodiaceae)
title_full_unstemmed Comparative palynological analysis of Lygodium venustum Sw. and L. volubile Sw. (Lygodiaceae)
title_sort comparative palynological analysis of lygodium venustum sw. and l. volubile sw. (lygodiaceae)
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85258
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AT morbellimartaalicia comparativepalynologicalanalysisoflygodiumvenustumswandlvolubileswlygodiaceae
AT giudicegabrielaelena comparativepalynologicalanalysisoflygodiumvenustumswandlvolubileswlygodiaceae
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