Melica aristata |
Melica spectabilis |
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awn melic, bearded melic grass, bearded oniongrass |
purple onion grass, showy melic grass |
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Habit | Plants cespitose, not rhizomatous. | Plants loosely cespitose, rhizomatous. |
Culms | 40-120 cm, not forming corms; internodes smooth. |
45-100 cm, forming corms, corms connected to the rhizomes by a rootlike, 10-30 mm structure, which usually remains attached to the corm; internodes smooth. |
Sheaths | glabrous, scabrous, sometimes sparsely pilose; ligules 2.5-5 mm; blades 5.5-15 cm long, 2-6 mm wide, often sparsely pilose on both surfaces. |
usually glabrous, often pilose at the throat and collar; ligules 0.1-2 mm; blades 2-5 mm wide, abaxial surfaces scabridulous over the veins, adaxial surfaces usually glabrous. |
Panicles | 10-26 cm; branches 4-6 cm, appressed or strongly ascending, with 1-4 spikelets per branch; pedicels not sharply bent; disarticulation above the glumes. |
5-26 cm; branches 2-5 cm, usually appressed, sometimes divergent and flexuous, with 2-3 spikelets; pedicels not sharply bent; disarticulation above the glumes. |
Spikelets | 11-21 mm, with (2)3-5 bisexual florets; rachilla internodes 3.4-3.8 mm. |
7-19 mm, with 3-7 bisexual florets, base of the distal florets concealed at anthesis; rachilla internodes 1-2 mm, not swollen when fresh, not wrinkled when dry. |
Glumes | usually less than 1/2 the length of the spikelets; lower glumes 3.5-6.4 mm long, 1.5-3 mm wide, 1-3-veined; upper glumes 5-7 mm long, 2.3-3.5 mm wide, 5-7-veined; lemmas 6-9 mm, glabrous, scabridulous, 5-11-veined, veins inconspicuous, apices rounded to acute, unawned; paleas about 73 the length of the lemmas; anthers 1.5-3 mm; rudiments 1.5-3.5 mm, acute, distinct from the bisexual florets, sometimes surrounded by a small sterile floret similar in shape to the bisexual florets. |
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Lower glumes | 9-11 mm long, 1.5-2.5 mm wide, 3-5-veined; upper glumes 11-12 mm long, 2-3 mm wide, 5-7-veined; lemmas 8-13 mm, with 0.3-0.6 mm hairs on the marginal veins, glabrous or with hairs to 0.1 mm elsewhere, 5-7-veined, veins prominent, apices bifid to emarginate, awned from the sinuses, awns 5-12 mm; paleas about 3/4 the length of the lemmas; anthers 2, 2-3 mm; rudiments 2.5-6 mm, tapering, resembling the bisexual florets. |
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Caryopses | 5-6 mm. |
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2n | =18. |
= 18. |
Melica aristata |
Melica spectabilis |
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Distribution |
CA; KY; NV; OR; WA
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CA; CO; ID; MT; NV; OR; UT; WA; WY; AB; BC
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Discussion | Melica aristata grows from 1000-3000 m in open fir and pine woods. It is restricted to the Flora region, being native from Washington to southern California. It has also been found in Kentucky, possibly as an introduction from contaminated seed. Melica aristata is easily distinguished from most species of Melica by its conspicuous awns. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Melica spectabilis grows in moist meadows, flats, and open woods, from 1200-2600 m, primarily in the Pacific Northwest and the Rocky Mountains. It is often confused with M. bulbosa, differing in its shorter glumes, "tailed" corm, and the more marked and evenly spaced purplish bands of its spikelets. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 24, p. 95. | FNA vol. 24, p. 91. |
Parent taxa | Poaceae > subfam. Pooideae > tribe Meliceae > Melica | Poaceae > subfam. Pooideae > tribe Meliceae > Melica |
Sibling taxa | ||
Synonyms | Bromelica spectabilis | |
Name authority | Thurb. ex Bol. | Scribn. |
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