Novedades taxonómicas y sinopsis del género Digitaria (Poaceae: Panicoideae: Paniceae) en Colombia y Venezuela.

VEGA, A. S.; Z. E. RÚGOLO DE AGRASAR

DARWINIANA

Instituto de Botánica Darwinion

Lugar: San Isidro, Buenos Aires; Año: 2005 vol. 43 p. 232 - 267

0011-6793

ABSTRACT: Vega, A. S. & Rúgolo de Agrasar, Z. E. 2005. Taxonomic novelties and synopsis of the genus Digitaria (Poaceae: Panicoideae: Paniceae) in Colombia and Venezuela. Darwiniana. Digitaria cuatrecasasii a new species from Honduras, Panamá, Colombia and Venezuela, is described and illustrated. The taxonomic position of D. cuatrecasasii is discussed and its inclusion in sect. Leianthae is proposed. A comparative table and some remarks about the related taxa are included. Digitaria californica var. villosissima, D. corynotricha, D. curvinervis, D. fragilis and D. sacchariflora are reported for the first time for Colombia. Digitaria aequiglumis var. aequiglumis, D. argillacea var. nulliseta, D. ciliaris var. rhachiseta, D. costaricensis, D. eriantha, D. filiformis var. laeviglumis, D. lehmanniana var. dasyantha, D. parva, D. sacchariflora and D. ternata are cited for the first time for Venezuela. Digitaria cardenasiana and D. villiculmis are here sinonimized under D. corynotricha, and D. aequatorienis under D. pittieri. The following new reports are included for the following countries: D. argillacea var. argillacea in Perú, D. argillacea var. nulliseta in Guatemala, D. curvinervis in Ecuador and México, D. eriantha in Ecuador, D. fragilis in Nicaragua and Panamá, D. lehmanniana var. lehmanniana in Cuba and D. leucites in México. This paper includes synonymy, iconography, geographical distribution and ecology, vernacular names, specimens examined; a key for the identification of taxa is also given. Eleven species are illustrated for the first time. Key words: Colombia, Digitaria, Paniceae, Poaceae, Taxonomy, Venezuela.