Agrostis hallii |
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Hall's bent, Hall's bent grass |
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Habit | Plants perennial; rhizomatous, rhizomes to 50 cm, not stoloniferous. |
Culms | 17-100 cm, erect. |
Leaves | mostly cauline or somewhat basally concentrated; sheaths smooth; ligules 2.3-7 mm, dorsal surfaces scabrous, apices acute, usually lacerate; blades 6-20 cm long, 2-5 mm wide, flat. |
Panicles | 7-22 cm long, 1.5-5.5(7) cm wide, lanceolate to narrowly ovate, more or less open to dense, lowest node with 2-15 branches; branches scabridulous, ascending to more or less appressed, mostly branching at or above midlength, some branching near the base, lower branches 1-5 cm; pedicels 0.5-6 mm. |
Spikelets | lanceolate, yellow-green, often tinged with purple. |
Glumes | equal to subequal, 2.5-4 mm, 1-veined, scabrous to scabridulous on the midvein, at least distally, sometimes also sparsely scabridulous over the back, acute to acuminate; callus hairs (0.8)1-2 mm, abundant, conspicuous; lemmas 2-3 mm, smooth, translucent to opaque, 5-veined, veins prominent at least distally, apices acute, entire or erose, sometimes toothed, teeth to about 0.2 mm, unawned; paleas absent, or to 0.2 mm and thin; anthers 3,1.5-2.3 mm. |
Caryopses | 1.5-2 mm. |
2n | = 42. |
Agrostis hallii |
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Distribution |
CA; OR; WA
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Discussion | Agrostis hallii is primarily coastal, growing in open areas of oak and coniferous forests in Oregon and California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 24, p. 653. |
Parent taxa | Poaceae > subfam. Pooideae > tribe Poeae > Agrostis |
Sibling taxa | |
Name authority | Vasey |
Web links |