Artículo
Pollen morphology of the south american genus Lessingianthus (Vernonieae, Asteraceae) and its taxonomic implications
Fecha de publicación:
03/2010
Editorial:
Taylor & Francis As
Revista:
Grana
ISSN:
0017-3134
e-ISSN:
1651-2049
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The pollen grains of 111 species of Lessingianthus were analysed. Almost all the species belong to the type "B" pollen, characteristic of the genus. These grains are oblate-spheroidal, spheroidal to prolate-spheroidal (P/E 0.93-1.04), echinolophate, 3-colporate, with lacunae in a regular pattern, without polar lacunae. However, some species show variations of this basic type. The type "B-1", "B-2" and "B-3" grains are respectively 3-porate lacking equatorial lacunae, 3-porate with equatorial lacunae and 3-colporate, psilolophate. Also, one species showed type "D" pollen, a palynomorph present in other genera of the tribe but not reported until now for Lessingianthus. The analysis confirms that the species of the genus constitute welldefined groups based on the pollen characteristics. The results ascertain that pollen morphology is a significant feature in the identification and delimitation of species and genera of Vernonieae. © 2010 Collegium Palynologicum Scandinavicum.
Palabras clave:
Classification
,
Compositae
,
Taxonomy
,
Vernonia
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IBONE)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Citación
Angulo, Maria Betiana; Dematteis, Massimiliano; Pollen morphology of the south american genus Lessingianthus (Vernonieae, Asteraceae) and its taxonomic implications; Taylor & Francis As; Grana; 49; 1; 3-2010; 12-25
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