Difference between revisions of "Neostapfia colusana"
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|subfamily=Poaceae subfam. Chloridoideae | |subfamily=Poaceae subfam. Chloridoideae | ||
|tribe=Poaceae tribe Orcuttieae | |tribe=Poaceae tribe Orcuttieae | ||
Latest revision as of 17:59, 11 May 2021
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Plants cespitose, eventually forming rather large clumps, covered with prominent brown viscid glands at maturity. Culms 10-30 cm, simple, ascending or decumbent, often geniculate, not breaking apart at the nodes. Sheaths loosely enveloping the culms; blades 2-5 cm long, 5-12 mm wide. Spikes 2-8 cm long, 8-12 mm thick.Lower lemmas about 5 mm long, about 3 mm wide, 7-11-veined; anthers about 2.5 mm. Caryopses about 2.5 mm. 2n = 40.
Discussion
Neostapfia colusana grows in vernal pools of Colusa, Merced, Solano, and Stanislaus counties, California, at elevations below 125 m. It is listed by the U.S. Fish and Wildlife Service as a threatened species because of its restricted habitat, much of which has been destroyed. The stout, cylindrical spikes emerging from the sheathing leaves resemble miniature ears of maize. This and the abundant viscid secretion make N. colusana a particularly distinctive species.
Selected References
None.