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Project Name Data (Last Modified On 10/22/2012)
 

Flora Data (Last Modified On 10/22/2012)
Genus SORGHASTRUM Nash
PlaceOfPublication Britton, Man. 71. 1901.
Synonym Chalcoelytrum Lunell, Amer. Midl. Nat. 4:212. 1915. Spikelets nearly terete, in pairs, one sessile, the other wanting, only the hairy pedicel present; glumes subindurate, the first hairy, the margins partly enclosing the second; sterile and fertile lemmas hyaline, ciliate on the margins, the latter deeply lobed, awned from between the lobes, the awn usually geniculate, twisted. Perennial with long narrow blades and narrow panicles of short few-jointed racemes, usually purplish or brownish, sometimes pale.
Key a. Plants annual; culms slender at the base, decumbent, rooting at the lower nodes;- spikelets mostly 4 mm. long, the articulation oblique, leaving a rather sharp callus; awns 2-4.5 cm. long -1. S. INCOMPLETUM aa. Plants perennial; culms coarse, erect; spikelets 5-6 mm. long, the callus rounded, blunt, the articulation leaving a cup-shaped pedicel; awns 1-1.5 mm. long - 2. S. NUTANS
 
 
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