Saccharum brevibarbe |
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shortbeard plumegrass |
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Habit | Plants rhizomatous. | ||||
Culms | 0.8-2.5 m; nodes glabrous or pubescent. |
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Sheaths | not ciliate; auricles absent; ligules 1-2 mm; blades usually 40-60 cm long, 7-25 mm wide, glabrous. |
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Peduncles | 45-75 cm, usually glabrous, occasionally pubescent or minutely pilose; panicles 3-10 cm wide, linear or oblong; rachises (10)30-50 cm, glabrous or sparsely pilose; lowest nodes glabrous or sparsely pilose; primary branches 7-14 cm, appressed; rame internodes 4-6 mm, with hairs. |
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Pedicels | 3-4 mm, with hairs. |
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Sessile | spikelets 6.5-10.5 mm long, 1.2-1.5 mm wide, purple or straw-colored. |
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Callus | hairs 3-7 mm, from shorter than to equaling the spikelets, white to straw-colored or brown; lower glumes 5-veined, smooth basally, scabrous distally; lower lemmas 5.5-8 mm, not or indistinctly veined, initially entire, sometimes becoming bifid, teeth 2-2.5 mm; upper lemmas 5.5-8 mm, 0.9-1 times as long as the lower lemmas, 3-veined, entire or bifid; awns 10-22 mm, always flattened below, sometimes spirally coiled; lodicule veins sometimes extending as hairlike projections; anthers 2. |
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Pedicellate | spikelets similar to the sessile spikelets. |
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2n | = 60. |
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Saccharum brevibarbe |
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Distribution |
AL; AR; DE; FL; GA; IL; KY; LA; MD; MS; NC; OK; SC; TN; TX; VA
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Discussion | Saccharum brevibarbe grows only in the southeastern United States. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 25, p. 612. | ||||
Parent taxa | Poaceae > subfam. Panicoideae > tribe Andropogoneae > Saccharum | ||||
Sibling taxa | |||||
Subordinate taxa | |||||
Name authority | (Michx.) Pers. | ||||
Web links |