Difference between revisions of "Aegilops geniculata"
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|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Aegilops ovata | |name=Aegilops ovata | ||
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| + | |rank=species | ||
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|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Triticeae;Aegilops;Aegilops geniculata | |hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Triticeae;Aegilops;Aegilops geniculata | ||
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name=Aegilops geniculata | name=Aegilops geniculata | ||
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|authority=Roth | |authority=Roth | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Cindy Roché | ||
| + | |illustration copyright=Utah State University | ||
|distribution=N.Y.;Calif.;Va. | |distribution=N.Y.;Calif.;Va. | ||
|reference=None | |reference=None | ||
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|subfamily=Poaceae subfam. Pooideae | |subfamily=Poaceae subfam. Pooideae | ||
|tribe=Poaceae tribe Triticeae | |tribe=Poaceae tribe Triticeae | ||
Latest revision as of 16:23, 11 May 2021
Culms 20-40 cm, geniculate at the base, usually with many tillers. Sheaths with hyaline margins, the distal portion of the lower cauline sheaths ciliate; blades 2-7.5 cm long, 2-5 mm wide. Spikes 1-3 cm long, bases 0.4-0.7 cm wide, narrowly ovoid to ellipsoid, gradually tapering distally, with (2)3-4 spikelets, the distal spikelet sterile; rudimentary spikelets 1(2); disarticulation at the base of the spikes, above the rudimentary spikelets. Fertile spikelets 7-10 mm long, 3-4 mm wide, urceolate; lower spikelet with 3-4 florets, the lower 1-2 florets fertile; apical spikelets 4-5 mm long, 1-2 mm wide, narrowly obovoid, with 1 floret, floret reduced, sterile. Glumes of fertile spikelets 6-10 mm, ovate, smooth, scabrous, appressed-velutinous, (3)4(5)-awned, awns 2-4.5 cm; glumes of apical spikelets about 3 mm, 4-awned, awns usually 1-3.5 cm; lemmas of fertile spikelets 6-8 mm, adaxial surfaces often velutinous distally, apices 2-3-awned, awns 1-2.5 cm. Caryopses 4-6 mm, falling free from the lemmas and paleas. Haplomes MU. 2n = 28.
Distribution
N.Y., Calif., Va.
Discussion
In the Flora region, Aegilops geniculata is known only from Mendocino County, California, where it usually occurs along roadsides. It is native from the Mediterranean area to central Asia. In California, it grows in silty clay.
Selected References
None.