Difference between revisions of "Muhlenbergia torreyi"
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name=Muhlenbergia torreyi | name=Muhlenbergia torreyi | ||
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|authority=(Kunth) Hitchc. ex Bush | |authority=(Kunth) Hitchc. ex Bush | ||
|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=Kans.;Okla.;Colo.;N.Mex.;Tex.;Wyo.;Ariz.;Nev. | |distribution=Kans.;Okla.;Colo.;N.Mex.;Tex.;Wyo.;Ariz.;Nev. | ||
|reference=None | |reference=None | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/200273ad09963decb8fc72550212de541d86569d/coarse_grained_fna_xml/V25/V25_742.xml |
|subfamily=Poaceae subfam. Chloridoideae | |subfamily=Poaceae subfam. Chloridoideae | ||
|tribe=Poaceae tribe Cynodonteae | |tribe=Poaceae tribe Cynodonteae | ||
Latest revision as of 18:58, 11 May 2021
Plants perennial; cespitose, not rhizomatous. Culms 10-40(50) cm, decumbent, usually all the nodes concealed by the sheaths; internodes mostly scabrous or smooth, hispidulous below the nodes. Leaves strongly basally concentrated, most blades not reaching more than 1/5 of the plant height; sheaths shorter than the internodes, rounded, not keeled, scabridulous or smooth, not becoming spirally coiled when old; ligules 2-5(7) mm, hyaline, acuminate, lacerate, often with lateral lobes; blades 1-3(5) cm long, 0.3-0.9 mm wide, tightly involute or folded, arcuate, scabridulous, midveins and margins not thickened, green, apices somewhat sharp-pointed. Panicles 7-21 cm long, 3-15 cm wide, diffuse; primary branches 1-8 cm, diverging 30-90° from the rachises, stiff, naked basally; pedicels 1-8 mm, sometimes appressed to the branches. Spikelets 2-3.5 mm. Glumes equal, 1.3-2.5 mm, scabridulous, 1-veined, apices acute to acuminate, minutely erose, unawned or awned, awns to 1.1 mm; lemmas 2-3.2(3.5) mm, narrowly elliptic to lanceolate, appressed-pubescent on the basal 1/2 - 3/4 of the margins and midveins, apices scabrous, acuminate, awned, awns 0.5-4 mm; paleas 2-3.2(3.5) mm, narrowly elliptic, intercostal region sparsely pubescent, apices acuminate; anthers 1.2-2.1 mm, greenish. Caryopses 1.7-2 mm, fusiform, brownish. 2n = 20, 21.
Distribution
Kans., Okla., Colo., N.Mex., Tex., Wyo., Ariz., Nev.
Discussion
Muhlenbergia torreyi grows in desert grasslands and open woodlands on sandy mesas, calcareous rock out-crops, and rocky slopes, at elevations of 1000-2450 m. Its range extends from the southwestern United States to northern Mexico. It also grows, as a disjunct, in northwestern Argentina.
Selected References
None.