IBONE 05434
INSTITUTO DE BOTANICA DEL NORDESTE
Unidad Ejecutora - UE
artículos
Título:
Taxonomic Positon and Identity of Stenocephalum monticulum (Vernonieae, Asteraceae)
Autor/es:
DEMATTEIS, M.; ANGULO, M.B.
Revista:
Blumea
Editorial:
Universidad de Leiden
Referencias:
Lugar: Leiden; Año: 2007
Resumen:
The genus Stenocephalum Sch.Bip. (Vernonieae, Asteraceae) includes six South American
species that present cylindrical heads, 4--11 florets by capitula, cymose inflorescences and
type C pollen. Until now, Stenocephalum monticolum (Mart. ex DC.) Sch.Bip. has been
considered as a synonym of S. apiculatum (Mart. ex DC.) Sch.Bip. However, the analysis of
the type material and additional specimens indicate that it is a quite different species, which
differs in leaves size, pubescence and capitula arrangement. Stenocephalum monticolum has
leaves 9--20 mm long, leaf blades villous at base and capitula agglomerate at the stems tips,
while S. apiculatum presents leaves 30--60 mm long, leaf blades basally glabrous and heads
mostly solitary, arranged in a pseudo-spiciform inflorescence. Consequently, in this paper S. monticolum is resurrected from the synonymy of S. apiculatum, re-described and illustrated.
Key words: Vernonia, taxonomy, Compositae, South America, Brazil
