Difference between revisions of "Crypsis schoenoides"
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|common_names=Swamp pricklegrass | |common_names=Swamp pricklegrass | ||
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|subfamily=Poaceae subfam. Chloridoideae | |subfamily=Poaceae subfam. Chloridoideae | ||
|tribe=Poaceae tribe Cynodonteae | |tribe=Poaceae tribe Cynodonteae | ||
Latest revision as of 17:58, 11 May 2021
Culms 2-75 cm, prostrate to erect, sometimes geniculate, usually not branching above the base, but some plants profusely branched. Sheaths glabrous or ciliate at the throat, often inflated; collars glabrous; ligules 0.5-1 mm; blades 2-10 cm long, 2-6 mm wide, not disarticulating. Panicles 0.3-4(7.5) cm long, 5-6(15) mm wide, 1-5 times longer than wide, bases usually enclosed in the uppermost leaf sheaths at maturity. Spikelets 2.7-3.2 mm, tardily disarticulating. Lower glumes 1.8-2.3 mm; upper glumes 2.2-2.7 mm; lemmas 2.4-3 mm; paleas 2-veined; anthers 3, 0.7-1.1 mm. Caryopses about 1.3 mm. 2n = 32.
Distribution
Ont., N.J., Mass., Ohio, Utah, Calif., Del., Mich., Wis., Oreg., N.Y., Pa., Ill., Ind., Iowa, Vt., Ariz., Mo., Nev.
Discussion
Crypsis schoenoides is common to abundant in clay or sandy clay soils around drying lake margins and vernal pools. In the Flora region, it is most abundant in California, but also appears to be established in a few other western states. It is known from a few collections in several eastern states (where it was first introduced in the late 1800s), though apparently none more recently than 1955. Its native range extends from southern Europe and northern Africa through western Asia to India.
Selected References
None.