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Genera of the North American Paniceae (Poaceae: Panicoideae)

Robert D. Webster
Systematic Botany
Vol. 13, No. 4 (Oct. - Dec., 1988), pp. 576-609
DOI: 10.2307/2419204
Stable URL: http://www.jstor.org/stable/2419204
Page Count: 34
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Genera of the North American Paniceae (Poaceae: Panicoideae)
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Abstract

A comprehensive study of generic concepts and evaluation of taxonomic characters is presented for the Paniceae of North America. An original set of data, consisting of 409 characters recorded for 25 genera, was collected and analyzed to produce a bracketed key to the genera. The data were analyzed to select the best subset of characters for inclusion in a synoptic key and descriptions. Character concepts and differences among the recognized character states for each of the selected 57 characters are discussed. A synoptic key, showing the distribution of genera for the character states, is presented. Pertinent nomenclatural data and fully comparative descriptions are given. Italicized within each description are the diagnostic characters required for identification. Remarks on the morphology and relationships of each genus are given. New combinations are proposed for Digitaria cognata var. arenicola, Urochloa ciliatissima, Urochloa platyphylla, Urochloa plantaginea, and Urochloa adspersa.

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