Morronea, A New Genus Segregated from Panicum (Paniceae, Poaceae) Based on Morphological and Molecular Data
Abstract—
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 from Mexico to Argentina, is proposed on the basis of morphological and molecular characters. They are plants growing at forest edges, with membranous-ciliate ligules, lower glume reduced, 1/6 to 1/4 the spikelet length, lower palea and lower flower absent, and upper anthecium indurate with simple papillae and conspicuous macrohairs all over its surface. 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.
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 from Mexico to Argentina, is proposed on the basis of morphological and molecular characters. They are plants growing at forest edges, with membranous-ciliate ligules, lower glume reduced, 1/6 to 1/4 the spikelet length, lower palea and lower flower absent, and upper anthecium indurate with simple papillae and conspicuous macrohairs all over its surface. 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; Parviglumia; grasses; phylogeny; taxonomy
Document Type: Research Article
Publication date: 01 December 2013
- Systematic Botany is the scientific journal of the American Society of Plant Taxonomists and publishes four issues per year.
2011 Impact Factor: 1.517
2011 ISI Journal Citation Reports® Rankings: 87/190 - Plant Sciences
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