Difference between revisions of "Enteropogon chlorideus"
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|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Chloris chloridea | |name=Chloris chloridea | ||
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| + | |rank=species | ||
}} | }} | ||
|hierarchy=Poaceae;Poaceae subfam. Chloridoideae;Poaceae tribe Cynodonteae;Enteropogon;Enteropogon chlorideus | |hierarchy=Poaceae;Poaceae subfam. Chloridoideae;Poaceae tribe Cynodonteae;Enteropogon;Enteropogon chlorideus | ||
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name=Enteropogon chlorideus | name=Enteropogon chlorideus | ||
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|authority=(J. Presl) Clayton | |authority=(J. Presl) Clayton | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Linda A. Vorobik;Hana Pazdírková | ||
| + | |illustration copyright=Utah State University | ||
|distribution=Ariz.;Tex. | |distribution=Ariz.;Tex. | ||
|reference=None | |reference=None | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
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|subfamily=Poaceae subfam. Chloridoideae | |subfamily=Poaceae subfam. Chloridoideae | ||
|tribe=Poaceae tribe Cynodonteae | |tribe=Poaceae tribe Cynodonteae | ||
Latest revision as of 17:59, 11 May 2021
Illustrator: Linda A. Vorobik, Hana Pazdírková
Copyright: Utah State University
Plants perennial; cespitose and rhizomatous, each rhizome terminating in a cleistogamous spikelet. Culms to 100 cm, erect. Sheaths sparsely pilose near the ligules; ligules of lower leaves with a single prominent tuft of hairs; ligules of upper leaves usually glabrous; blades to 30 cm long, to 1 cm wide, usually scabrous, occasionally pilose. Panicles with 3-10(15) racemosely arranged branches, usually most nodes with more than 1 branch; branches 6-10 cm, naked below, with about 4 spikelets per cm distally. Spikelets with 1 bisexual and 1 sterile floret. Lower glumes 1-2 mm; upper glumes 2-3.5 mm; lower lemmas 4.5-7.5 mm long, about 1 mm wide, linear to narrowly lanceolate, glabrous or the margins sparsely strigose above, apices acute to acuminate, often bidentate, unawned or awned, awns 6.5-15 mm; sterile florets 1.4-3 mm long, to 0.3 mm wide, awns 2-8 mm. Chasmogamous caryopses about 4.5 mm long, about 0.8 mm wide; cleistogamous caryopses to 4 mm long, about 2.5 mm wide. 2n = 40, 80.
Discussion
Enteropogon chlorideus is native from the south-western United States through Mexico to Honduras. The spikelet-bearing rhizomes distinguish Enteropogon from most other grasses, but they are often missing from herbarium specimens. Seed set is highest in the cleistogamous spikelets.
Selected References
None.