Artículo
The taxonomic utility of micromorphology in Lepidaploa (Vernonieae: Asteraceae)
Fecha de publicación:
05/2018
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Nordic Journal of Botany
ISSN:
0107-055X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Lepidaploa belongs to tribe Vernonieae, one of the most complex tribes of Asteraceae, and the relationships within Lepidaploa and among related genera are poorly understood. Microcharacters may be of taxonomic value and may be used in the identification of taxa at different ranks. To evaluate the reliability of microcharacters as taxonomic markers in this group, we analysed the micromorphology of phyllaries, florets and cypselae in detail in 23 species of Lepidaploa.The species were studied using stereo, light, and scanning electron microscopy. Eight trichome types (eglandular and glandular) were observed on phyllaries, florets and cypselae, in addition to crystals, idioblasts and other microstructures. The results demonstrates that the ocurrence of different combinations of trichome types and crystals, presence of a stylar basal node, idioblasts and glandular apical anther appendages are highly useful to differentiate between related species of Lepidaploa and a diagnostic key using these characters is presented. However, these characters are not of much use to distinguish between closely related genera of Vernonieae since most characters appear homeoplasic and are found in representatives of different genera.
Palabras clave:
ANTHERS
,
CRYSTALS
,
CYPSELAE
,
IDIOBLASTS
,
PHYLLARIES
,
STYLE
,
TRICHOME
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IBONE)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Articulos de INST.DE BOTANICA DEL NORDESTE (I)
Citación
Marques, Danilo; Angulo, Maria Betiana; Nakajima, Jimi Naoki; Dematteis, Massimiliano; The taxonomic utility of micromorphology in Lepidaploa (Vernonieae: Asteraceae); Wiley Blackwell Publishing, Inc; Nordic Journal of Botany; 36; 9; 5-2018; 1-17
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