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Project Name Data (Last Modified On 10/23/2012)

Flora Data (Last Modified On 10/23/2012)
PlaceOfPublication Fl. Bor. Amer. 1:37. 1803.
Description Plants perennial; spikelets few, pointed, compressed, several- to many-flowered, in a dense terminal head, surrounded by an involucre of bracts, these often white at the base; scales spirally imbricate, some of them empty or with imperfect flowers; perianth none; stamens 3; style 2-cleft; achene lenticular, transversely rugose, capped by the persistent style base (tubercle).
Distribution About 20 species, in the Western Hemisphere.
Key a. Leaves 5-12 mm. wide; bracts green at the base - 1. D. WATSONI aa. Leaves 2-4 mm. wide; bracts sometimes whitish. b. Scales of the spikelet pubescent; achenes with about 6 prominent transverse ridges . 2. D. PUBERA bb. Scales of the spikelet glabrous; achenes minutely undulate - 3. D. CILIATA
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