Muhlenbergia glomerata |
Muhlenbergia curtifolia |
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bristly muhly, marsh muhly, muhlenbergie agglomeree, spike muhly |
Utah muhly |
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Habit | Plants perennial; rhizomatous, not cespitose. | Plants perennial; rhizomatous, not cespitose. |
Culms | 30-120 cm tall, 0.8-2.5 mm thick, erect, seldom branched above the base; internodes dull, mostly puberulent (sometimes sparsely so), terete, rarely keeled, strigose immediately below the nodes. |
10-45 cm tall, 0.3-0.5 mm thick, erect or decumbent; internodes hirsute and strigose below the nodes. |
Sheaths | scabridulous, slightly keeled; ligules 0.2-0.6 mm, membranous, truncate, lacerate-ciliolate; blades 2-15 cm long, 2-6 mm wide, flat, usually scabrous or scabridulous, occasionally smooth. |
shorter than the internodes, hirsute; ligules 0.2-0.6 mm, margins hyaline, apices truncate to obtuse, erose, ciliate; blades 0.5-4(5) cm long, 0.6-1.5(2.2) mm wide, awl-shaped, flat near the base, becoming slightly involute distally, strigose to scabrous abaxially, hirsute adaxially. |
Panicles | 1.5-12 cm long, 0.3-1.8 cm wide, lobed, dense; primary branches 0.2-2.5 cm, appressed; pedicels absent or to 1 mm, strigose. |
2-10 cm long, 0.2-1 cm wide, contracted, not dense; primary branches 0.3-2.5 cm, ascending to appressed; pedicels 0.1-3 mm. |
Spikelets | 3-8 mm. |
2.8-4 mm. |
Glumes | subequal, 3-8 mm (including the awn), about 1.3-2 times longer than the lemmas, smooth or scabridulous distally, 1-veined, acuminate, awned, awns to 5 mm; lemmas 1.9-3.1 mm, lanceolate, pubescent on the calluses, mid-veins, and margins, hairs to 1.2 mm, apices scabridulous, acuminate, unawned or awned, awns to 1 mm; paleas 1.9-3.1 mm, lanceolate, loosely pilose between the veins, apices acuminate; anthers 0.8-1.5 mm, yellowish. |
equal, 2.5-4 mm, 1-veined, veins scabridulous, apices acute; lemmas 2.8-4 mm, lanceolate, hairy on the lower 3/4, hairs to 1.5 mm, tawny, midveins scabridulous distally, apices acuminate, awned, awns usually 1-6(12) mm, delicate, straight; paleas 2.8-4 mm, lanceolate, intercostal region tawny pubescent on the basal 3/4; anthers 1.2-1.6 mm, yellowish-purple. |
Caryopses | 1-1.6 mm, fusiform, brown. |
2-2.4 mm, fusiform, brownish. |
2n | = 20. |
= unknown. |
Muhlenbergia glomerata |
Muhlenbergia curtifolia |
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Distribution |
CO; CT; DC; IA; ID; IL; IN; KY; MA; MD; ME; MI; MN; MT; NC; ND; NE; NH; NJ; NV; NY; OH; OR; PA; RI; SD; UT; VA; VT; WA; WI; WV; WY; AB; BC; LB; MB; NB; NS; NT; ON; PE; QC; SK; YT
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AZ; NV; UT |
Discussion | Muhlenbergia glomerata grows in meadows, marshes, bogs, alkaline fens, lake margins, stream banks, beside irrigation ditches and hot springs, and on gravelly slopes, in many different plant communities, at elevations of 30-2300 m. It is most common in southern Canada and the northeastern United States, but grows sporadically throughout the western United States. It is not known from Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Muhlenbergia curtifolia grows on damp ledges and in rock crevices of vertical cliffs, and beneath large calcareous boulders above the canyon floor, at elevations of 1600-2750 m, in the southwestern United States. It resembles M. thurberi, differing in its flatter leaf blades and shorter ligules and anthers. It also tends to grow in more mesic habitats than M. thurberi. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 154. | FNA vol. 25, p. 167. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Muhlenbergia | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Muhlenbergia |
Sibling taxa | ||
Synonyms | M. racemosa var. cinnoides, M. glomerata var. cinnoides | |
Name authority | (Willd.) Trin. | Scribn. |
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