Agrostis vinealis

Schreb.
Common names: Brown bent
Synonyms: Agrostis trinii Agrostis hyperborea
Treatment appears in FNA Volume 24. Treatment on page 643.
Please click on the illustration for a higher resolution version.
Illustrator: Sandy Long

Copyright: Utah State University

Plants perennial; densely cespitose, rhizomatous, rhizomes to about 10 cm, slender, scaly, not stoloniferous. Culms 10-60 cm, erect or geniculate at the base, slender, smooth, with 1-2 (4) nodes. Sheaths smooth; ligules 0.6-5 mm, dorsal surfaces scabridulous, apices acute to obtuse, entire or lacerate to erose; blades 2-10 cm long, 1-3 mm wide, usually flat, sometimes involute, sometimes bristlelike, adaxial surfaces scabrous, abaxial surfaces sometimes scabrous. Panicles 2-15 cm long, (0.8) 1-5.5 (8) cm wide, lanceolate to oblong, somewhat open, often contracted after anthesis, lowest node with (1) 3-8 branches; branches scabrous, readily visible, more or less erect, branched mostly at or below midlength, spikelets closely clustered, lower branches 3-5 cm; pedicels 0.5-2 mm. Spikelets lanceolate to narrowly oblong, greenish, purplish, or brownish. Glumes equal to subequal, 2-4 mm, membranous, acute to acuminate; lower glumes 1-veined, scabrous to scabridulous over the midvein; upper glumes usually shorter than the lower glumes, 1 (3) -veined, almost smooth; callus hairs to 0.1 mm, sparse; lemmas 1.5-2.4 mm, about 3/4 the length of the glumes, bases minutely pubescent, glabrous and smooth elsewhere, translucent to opaque, 5-veined, veins usually prominent distally, apices blunt, entire, usually awned from near the base, awns 2-4.5 mm, geniculate, rarely unawned; paleas to about 0.2 mm; anthers 3,1-1.8 mm. Caryopses 0.8-1.3 mm; endosperm solid. 2n = 28.

Discussion

Agrostis vinealis is native to Eurasia; it is not clear if populations in Greenland and Alaska represent a circumboreal distribution, or are introductions. It forms a fine, compact turf. It is similar to A. canina (see previous) in its habitat, except that it appears to be more heat tolerant and drought resistant. It used to be included in A. canina, but differs from that species in its subterranean rhizomes and lack of leafy stolons. Agrostis vinealis readily hybridizes with A. capillaris (p. 639) and A. stolonifera (p. 641), the hybrids being somewhat intermediate between the two parents.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Agrostis vinealis"
membranous +  and scarious +
not penicillate +
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
awned +  and entire +
M.J. Harvey +
Schreb. +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
geniculate +
0.2 cm2 mm <br />0.002 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
rounded +  and keeled +
translucent +  and opaque +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
0.2 cm2 mm <br />0.002 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
not evident +
scabridulous +
cross +, linear +  and narrowly lanceolate +
1mm;3mm +
spikelike +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
hairy +  and glabrous +
Brown bent +
not branching +
10 cm100 mm <br />0.1 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
Alaska +  and Greenland +
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 +
acute +  and acuminate +
subequal +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
membranous +
uncinate +
diffuse +  and dense +
pubescent +  and glabrous +
warty-tuberculate +  and scabridulous +
lanceolate +  and ovate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
membranous +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
membranous +
inconspicuous +
lanceolate +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
scabrous +  and scabridulous +
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 +
1 +  and 2 +
slender +
2 +  and 1 +
well-developed +
2-keeled +
minute +  and subequal +
2cm +  and 15cm +
lanceolate +  and oblong +
1 cm10 mm <br />0.01 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
dry +  and fleshy +
not prolonged +
hairy +  and glabrous +
scabrous +  and scabridulous +
brownish +, purplish +  and greenish +
1 +  and 60 +
lanceolate +  and narrowly oblong +
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 (?) +
Agrostis trinii +  and Agrostis hyperborea +
Agrostis vinealis +
Agrostis +
species +
membranous +
2 +  and 5 +
not convergent +
scabrous +  and scabridulous +
plant +  and cespitose +
aquatic +  and terrestrial +