Revisión de las especies de Axonopus (Poaceae: Panicoideae: Paniceae), serie Suffulti

CIALDELLA, A.M.; MORRONE, O.; F.O. ZULOAGA

ANNALS OF THE MISSOURI BOTANICAL GARDEN

Missouri Botanical Garden

Lugar: St. Louis, Missouri; Año: 2006 vol. 93 p. 592 - 633

0026-6493

ABSTRACT: The taxonomic revision of species of the genus Axonopus series Suffulti is presented. This series includes perennial species, frequently growing in savanna and in grasslands. The plants are rhizomatous or stoloniferous, with conduplicate sheaths and narrowly linear to linear-lanceolate blades, flat to folded along their entire length, or open toward the apex. The inflorescences are exerted from the apex of the culms; they consist of spiciform racemes of variable number, mainly digitate. The rachis of each raceme is triquetrous, sinuous, with hispidulous angles, sometimes with long and rigid hairs. The upper lemma and the upper palea are indurate, dark brown, papillose and shiny. Sixteen species are here considered within Axonopus series Suffulti, principally distributed in South America, with Axonopus ciliatifolius and A. jeanyae endemic species of Belize and Panama respectively. Description of morphological characters and microcharacters of the upper floret, a key to identify the species, descriptions, synonymy, geographical distribution and illustrations of characteres of taxonomic value are given. Finally, lectotipification of series Suffulti is established and Axonopus ramboi is included in A. argentinus as a sinonym.