Agrostis hallii

Vasey
Common names: Hall's bent
Treatment appears in FNA Volume 24. Treatment on page 653.
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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.

Distribution

Calif., Oreg., Wash.

Discussion

Agrostis hallii is primarily coastal, growing in open areas of oak and coniferous forests in Oregon and California.

References

None.

Lower Taxa

No lower taxa listed.