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Key to families | Table of families and genera
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|Family: Poaceae (Gramineae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Annual, perennial herb. Stem: generally erect and tufted; internode solid or hollow. Leaf: basal and cauline; sheath generally glabrous; ligule short-hairy or membranous, ciliate. Inflorescence: terminal and/or axillary, generally panicle-like, dense, +- cylindric (raceme-like in Pennisetum clandestinum); spikelets generally many, short-stalked to sessile, generally in clusters of 1--4 on highly reduced branches, subtended by 6--many inner and outer sets of bristles and a single terminal generally >> than the others; spikelet cluster and bristles generally falling as 1 unit. Spikelet: dorsally compressed to +- round in ×-section; glumes 1--2, lower glume < upper when present; upper +- = spikelet; florets 2, lower floret sterile or staminate; upper floret fertile, lemma firm, +- thick or hard, smooth or scabrous, generally dull, margin flat to inrolled, tip blunt; palea < lemma, = in texture; anthers 3.
Species In Genus: +- 80 species: mostly warm temperate, subtropics, tropics. Etymology: (Latin: feather or plume + bristle, conspicuous bristles subtending spikelets) Note: Separation of Pennisetum from Cenchrus remains unsettled. Pennisetum glaucum (L.) R. Br., Pennisetum latifolium Spreng., Pennisetum macrourum Trin., Pennisetum nervosum (Nees) Trin., Pennisetum purpureum Schumach. have been collected in California, but none has become naturalized. Some species cultivated for ornamental, food (pearl millet), fodder, fiber for paper-making; others are aggressive weeds.
eFlora Treatment Author: James P. Smith, Jr.
Jepson Online Interchange
Key to PennisetumPrevious taxon: Paspalum vaginatum
Next taxon: Pennisetum ciliare
Citation for this treatment: James P. Smith, Jr. 2016. Pennisetum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=11134, accessed on September 25, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on September 25, 2016.