IBODA 05360
INSTITUTO DE BOTANICA DARWINION
Unidad Ejecutora - UE
artículos
Título:
A PHYLOGENETIC EVALUATION OF SECTS. AGROSTOIDEA, MEGISTA, PRIONITIA AND TENERA OF PANICUM (PANICOIDEAE, POACEAE): TWO NEW GENERA STEPHOSTACHYS AND SORENGIA
Autor/es:
ZULOAGA, FERNANDO OMAR; SCATAGLINI, MARÍA AMALIA; MORRONE, OSVALDO
Revista:
TAXON
Referencias:
Año: 2009
ISSN:
0040-0262
Resumen:
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The taxonomic features of
species of Panicum, previously
classified in sects. Megista, Tenera,
Prionitia and Agrostoidea, subg. Agrostoidea
and Phanopyrum of Panicum, are here reviewed and compared
with Panicum s. str. and other taxa of
Paniceae. All taxa, previously considered in these sections, are now included
in the new genera Stephostachys and Sorengia, which are based on morphological
and molecular characters. Stephostachys
includes one species, S. mertensii (Roth)
Zuloaga & Morrone, ranging from Mexico to Argentina, while Sorengia comprised seven species, S. anceps (Michx.) Zuloaga & Morrone, S. caricoides (Nees ex Trin.)
Zuloaga & Morrone, S. petersonii (Hitchc.
& Ekman) Zuloaga & Morrone, S.
prionitis (Nees) Zuloaga & Morrone, S.
rigidula (Bosc ex Nees) Zuloaga & Morrone, S. stenodes (Griseb.) Zuloaga & Morrone, and S. tenera (Beyr. ex Trin.) Zuloaga &
Morrone, distributed from the United States to Bolivia and Brazil. Affinities
of the new genera with other genera of Paniceae are also discussed. Lectotypes
are designated for Panicum caricoides var.
glabriusculum Döll, P. pilosum Döll, P. prionitis Nees, P.
prionitis var. varium Kuntze, P. stenodes Griseb.
