Difference between revisions of "Muhlenbergia spiciformis"
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|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Muhlenbergia parviglumis | |name=Muhlenbergia parviglumis | ||
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| + | |rank=species | ||
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|hierarchy=Poaceae;Poaceae subfam. Chloridoideae;Poaceae tribe Cynodonteae;Muhlenbergia;Muhlenbergia spiciformis | |hierarchy=Poaceae;Poaceae subfam. Chloridoideae;Poaceae tribe Cynodonteae;Muhlenbergia;Muhlenbergia spiciformis | ||
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name=Muhlenbergia spiciformis | name=Muhlenbergia spiciformis | ||
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|authority=Trin. | |authority=Trin. | ||
|rank=species | |rank=species | ||
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|basionyms= | |basionyms= | ||
|family=Poaceae | |family=Poaceae | ||
| + | |illustrator=Linda A. Vorobik;Annaliese Miller | ||
| + | |illustration copyright=Utah State University | ||
|distribution=N.Mex.;Tex. | |distribution=N.Mex.;Tex. | ||
|reference=None | |reference=None | ||
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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
Plants perennial; cespitose, not rhizomatous. Culms 25-80 cm, erect, wiry; internodes mostly glabrous, strigose or glabrous below the nodes. Sheaths scabridulous, not becoming spirally coiled when old; ligules 1-3 mm, membranous, acuminate, deeply lacerate; blades 2-12 cm long, 1-3 mm wide, flat to involute, scabridulous abaxially, hirtellous or scabrous adaxially. Panicles 4-18(20) cm long, 0.2-2.8 cm wide, contracted, not dense, sometimes interrupted below; panicle branches 0.6-5 cm, appressed or diverging up to 30° from the rachises, spikelet-bearing to the base; pedicels 0.1-3 mm. Spikelets 3-4 mm. Glumes unequal, 0.3-1 mm, shorter than the florets, 1-veined, unawned; lower glumes shorter than the upper glumes, obtuse to acute, sometimes erose; lemmas 2.8-4 mm, narrowly lanceolate, purplish, scabrous, sparsely appressed-pubescent on the calluses and lower 1/4 of the midveins and margins, hairs shorter than 0.3 mm, apices acuminate, awned, awns (10)20-40 mm; paleas 2.6-3.9 mm, narrowly lanceolate, intercostal region sparsely pubescent on the basal 1/3, apices acuminate, scabrous; anthers 0.9-1.6 mm, purplish. Caryopses 2-2.6 mm, fusiform, brownish. 2n = 40.
Discussion
Muhlenbergia spiciformis grows on rocky slopes, cliffs, and calcareous rock outcrops, often in thorn-scrub and open woodland communities. Its elevational range is 450-2800 m; its geographic range extends from the southwestern United States to northern Mexico.
Selected References
None.