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Chloris truncata R. Br.  
Go To Encyclopedia of Life...
Family: Poaceae
Creeping Windmill Grass, more...Black Windmill-Grass
[Chloris elongata Poir., moreChloris megastachya Schrad. ex Schult., Chloris truncata f. abbreviata Thell.]
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John Tann  
  • FNA
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Mary E. Barkworth. Flora of North America

Plants perennial; stoloniferous. Culms 30-50 cm. Sheaths glabrous; ligules short-ciliate; blades 9-17 cm long, 0.2-0.3 mm wide, without basal hairs, glabrous, sometimes scabrous. Panicles digitate, with 5-13 clearly distinct branches; branches 5-23 cm, spikelet-bearing to the base or within 1 cm of the base, averaging 6 spikelets per cm elsewhere. Spikelets dark brown to black, with 1 bisexual and 1(2) staminate floret(s). Lower glumes 1.4-2.3 mm; upper glumes 2.8-4.2 mm; lowest lemmas 1.8-4.5 mm long, 0.2-0.7 mm wide, narrowly elliptic, becoming very dark, often almost black at maturity, sides not grooved, mostly glabrous but the margins appressed pubescent, sometimessparsely so, hairs shorter than 1 mm, apices truncate, awned, awns 3.1-16 mm; second florets 1.3-3.5 mm long, 0.5-0.9 mm wide, not inflated, truncate, not or only minutely bilobed, awned, awns 3.1-12.5 mm; anthers about 0.6 mm. Caryopses 1.7-2.2 mm long, 0.3-0.5 mm wide, ellipsoid to narrowly obovate, trigonous. 2n = 40.

Chloris truncata, like the rather similar C. ventricosa, is an Australian native that has been found near woolen mills in South Carolina and beside a road near Lake Skinner in Riverside County, California. It usually differs from C. ventricosa in having longer panicle branches. Other differences include its very dark, almost black, bisexual lemmas and their usually appressed pubescent margins.

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Chloris truncata
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John Tann  
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The National Science Foundation
Developments of SEINet, Symbiota, and associated specimen databases have been supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)