Morronea, a new genus segregated from Panicum (Paniceae, Poaceae) based on morphological and molecular data

A. SCATAGLINI; F.O. ZULOAGA.

SYSTEMATIC BOTANY

AMER SOC PLANT TAXONOMISTS

Lugar: Laramie; Año: 2013 vol. 38 p. 1 - 11

0363-6445

Taxonomic features of species of Panicum section Parviglumia are reviewed and compared with those of other taxa in tribe Paniceae.The new genus Morronea, including six species ranging fromMexico to Argentina, is proposed on the basis ofmorphological characters. They areplants growing at forest edges, withmembranous-ciliate ligules, lower glume reduced, 1/6 to ¼ the spikelet length, lower palea and lower flowerabsent, and upper anthecium indurate with simple papillae and conspicuous macrohairs all over its surface, and chloroplast ndhF sequences toinclude six species ranging from Mexico to Argentina. The new combinations: Morronea arundinariae, M. cayoensis, M. guatemalensis,M. incumbens, M. parviglumis, and M. trichidiachnis are proposed and the new genus is compared with other genera of the tribe Paniceae.Keywords?Gramineae, grasses, Parviglumia, phylogeny, taxonomy.