Agrostis hallii

Vasey
Common names: Hall's bent
Endemic
Treatment appears in FNA Volume 24. Treatment on page 653.
Please click on the illustration for a higher resolution version.
Illustrator: Sandy Long

Copyright: Utah State University

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.

Discussion

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

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Agrostis hallii"
membranous +  and scarious +
not penicillate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
erose +  and entire +
awned +, truncate +  and entire +
Toothed (?) +, Acute (?) +  and Lacerate (?) +
M.J. Harvey +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
geniculate +
rounded +  and keeled +
midlength +
swelling +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
6 cm60 mm <br />0.06 m <br /> (20 cm200 mm <br />0.2 m <br />) +
not evident +
scabridulous +
cross +, linear +  and narrowly lanceolate +
2mm;5mm +
ascending;more or less appressed +
scabridulous +
spikelike +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
hairy +  and glabrous +
Hall's bent +
not branching +
17 cm170 mm <br />0.17 m <br /> (100 cm1,000 mm <br />1 m <br />) +
not woody +
Calif. +, Oreg. +  and Wash. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
sterile +  and bisexual +
compressed +
reduced +
(1)1.3-2(4) times longer than +
subtending +
scabridulous +  and scabrous +
acute +  and acuminate +
subequal +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
uncinate +
diffuse +  and dense +
translucent +  and opaque +
pubescent +  and glabrous +
warty-tuberculate +  and scabridulous +
lanceolate +  and ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
membranous +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
membranous +
inconspicuous +
lanceolate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +
minute +  and subequal +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
7cm +  and 22cm +
lanceolate +  and narrowly ovate +
1.5 cm15 mm <br />0.015 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
dry +  and fleshy +
not prolonged +
hairy +  and glabrous +
scabrous +  and scabridulous +
tinged with purple +  and yellow-green +
1 +  and 60 +
lanceolate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Gramineae +
Agrostis hallii +
Agrostis +
species +
membranous +
2 +  and 5 +
0.2 cm2 mm <br />0.002 m <br /> (?) +
not convergent +
scabrous +  and scabridulous +
aquatic +  and terrestrial +