Muhlenbergia andina |
Muhlenbergia sinuosa |
|
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foxtail muhly |
marshland muhly |
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Habit | Plants perennial; rhizomatous, not cespitose. | Plants annual; delicate. |
Culms | 25-85 cm tall, 0.9-1.7 mm thick, ascending; internodes glabrous for most of their length, scabrous to strigose below the nodes. |
12-50 cm, erect to geniculate; internodes mostly glabrous and smooth or scabridulous, scabridulous or strigulose below the nodes. |
Sheaths | scabridulous, especially basally; ligules 0.5-1.5 mm, membranous, truncate, lacerate to ciliate; blades 4-16 cm long, 2-4(5) mm wide, flat, scabrous abaxially, pubescent adaxially. |
usually longer than the internodes, glabrous, smooth or scabridulous; ligules 1.5-3.1 mm, hyaline, truncate to obtuse, irregularly toothed to lacerate, with lateral lobes that exceed the central portion; blades 2-8.5 cm long, 0.8-2 mm wide, flat, sometimes involute, scabridulous abaxially, shortly pubescent to minutely villous adaxially, midveins prominent abaxially. |
Panicles | 2-15 cm long, 0.5-2.8 cm wide, contracted, dense; primary branches 0.5-5 cm, appressed to strongly ascending; pedicels 0.5-1.5 mm, appressed, strigose. |
10-26 cm long, 2.8-8 cm wide; primary branches 2.6-7 cm, often capillary, diverging 25-80° from the rachises; pedicels 4-7 mm, usually curved, often through 90° or more. |
Spikelets | 2-4 mm. |
1.4-2 mm. |
Glumes | equal to subequal, 2-4 mm, subequal to or longer than the florets, 1-veined, veins scabridulous, apices acuminate to awn-tipped; lemmas 2-3.5 mm, lanceolate, grayish-green, hairy on the calluses and lemma bases, hairs 2-3.5 mm, apices acuminate, awned, awns 1-10 mm; paleas 2-3.5 mm, lanceolate, bases with silky hairs between the veins, apices acuminate; anthers 0.4-1.5 mm, yellow. |
equal, 0.7-1.2 mm, usually conspicuously strigulose, particularly near the margins and apices, 1-veined, acute to obtuse, unawned; lemmas 1.4-2 mm, oblong-elliptic, greenish, sometimes purplish-tinged, shortly appressed-pubescent on the midveins and margins, apices acute or obtuse, unawned; paleas 1.3-1.8 mm, oblong-elliptic, intercostal region sparsely short-pilose or glabrous; anthers 0.6-1.2 mm, olivaceous. |
Caryopses | 0.9-1.1 mm, cylindrical, yellowish-brown. |
0.8-1.2 mm, fusiform, brownish. |
2n | = 20. |
= 20, 24. |
Muhlenbergia andina |
Muhlenbergia sinuosa |
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Distribution |
AZ; CA; CO; ID; KS; MT; NM; NV; OR; TX; UT; WA; WY; BC; MB; SK
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AZ; NM
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Discussion | Muhlenbergia andina grows in damp places such as stream banks, gravel bars, marshes, lake margins, damp meadows, around springs, and in canyons, at elevations of 700-3000 m. It grows only in the western part of southern Canada and the contiguous United States. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Muhlenbergia sinuosa grows in sandy soil along washes, on open slopes and rocky ledges, and in roadside ditches, at elevations of 1650-2300 m. It is usually found in oak-pine forests, pinyon-juniper woodlands, oak-gramma savannahs, and riverine woodlands. Its range extends from the southwestern United States into northern Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 156. | FNA vol. 25, p. 196. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Muhlenbergia | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Muhlenbergia |
Sibling taxa | ||
Name authority | (Nutt.) Hitchc. | Swallen |
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