Muhlenbergia asperifolia |
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alkali muhly, scratchgrass |
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Habit | Plants perennial, 10–60(100) cm tall; rhizomatous, occasionally stoloniferous. |
Culms | with bases somewhat compressed-keeled; internodes glabrous; shiny below the nodes. |
Leaves | blades 2–7(11) cm × 1–2.8(4)mm; flat, occasionally conduplicate; lower surface smooth or minutely scabrous; upper surface minutely scabrous; margins and midveins not conspicuously thickened; greenish; tips acute. |
Inflorescences | 6–21 × 4–16 cm, broadly ovoid; open; branches whitish; primary branches 3–12 cm × 0.05–0.1 mm; capillary; lower branches spreading, not appearing clustered; pedicels 3–14 mm; longer than the spikelets. |
Spikelets | 1.2–2.1 mm. |
Glumes | equal, 0.6–1.7 mm, 1-veined; purplish, minutely scabrous particularly on the veins; tips acute. |
Lemmas | 1.2–2.1 mm, lanceolate to oblong-elliptic; somewhat gray, glabrous; smooth, occasionally minutely scabrous near the tips; tips acute; awnless or mucronate; the mucros to 0.3 mm. |
Anthers | 1–1.3 mm; greenish yellow to purplish at maturity. |
2n | =20, 22, 28. |
Muhlenbergia asperifolia |
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Distribution | |
Discussion | Moist, alkaline meadows. 100–1500m. BR, BW, Col, ECas, Lava, Owy. CA, ID, NV, WA; north to British Columbia, northeast to Ontario, southeast to TX, south to Mexico. Native. |
Source | Flora of Oregon, volume 1, page 435 Barbara Wilson, Richard Brainerd, Nick Otting |
Sibling taxa | |
Synonyms | Sporobolus asperifolius |
Web links |
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