Bromus frondosus

(Shear) Wooton & Standi.
Common names: Weeping brome
Treatment appears in FNA Volume 24. Treatment on page 213.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants perennial; not rhizomatous. Culms 50-100 cm, erect to spreading; nodes 3-5, usually glabrous, rarely pubescent; internodes glabrous. Sheaths usually glabrous, sometimes pubescent or pilose, especially the lower sheaths, midrib of the culm leaves usually narrowed just below the collar; auricles absent; ligules 1-3 mm, glabrous, truncate to obtuse, laciniate; blades 10-20 cm long, 3-6 mm wide, flat, often glaucous, usually glabrous, sometimes scabrous, basal blades often pubescent. Panicles 10-20 cm, open; branches ascending and spreading or declining and drooping. Spikelets 15-30 mm, elliptic to lanceolate, terete to moderately laterally compressed, with (4) 5-10 florets. Glumes usually glabrous, rarely slightly pubescent, 3-veined; lower glumes 5.5-8 mm; upper glumes 6.5-9 mm, often mucronate; lemmas 8-12 mm, elliptic to lanceolate, rounded over the midvein, backs pubescent or glabrous, margins usually with longer hairs, apices subulate to obtuse, entire; awns 1.5-4 mm, straight, arising less than 1.5 mm below the lemma apices; anthers 1.5-3.5 mm. 2n = 14.

Distribution

Utah, Ariz., Colo., N.Mex.

Discussion

Bromus frondosus grows in open woods and on rocky slopes, at 1500-2500 m. Its range extends from Colorado, Arizona, and New Mexico into Mexico.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Bromus frondosus"
membranous +  and scarious +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Subulate (?) +  and Obtuse (?) +
Leon E. Pavlickf +
(Shear) Wooton & Standi. +
1 (?) +  and 3 (?) +
straight +
distinct +
subterminal +  and terminal +
geniculate +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
glabrous +  and pubescent +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
not evident +
glabrous +  and glaucous +
cross +, linear +  and narrowly lanceolate +
3mm;6mm +
drooping;declining;spreading;ascending +
spikelike +
Weeping brome +
not branching +
erect +  and spreading +
50 cm500 mm <br />0.5 m <br /> (100 cm1,000 mm <br />1 m <br />) +
not woody +
Utah +, Ariz. +, Colo. +  and N.Mex. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
5 +  and 10 +
terete +  and laterally compressed +
always shorter +  and usually shorter +
lanceolate +
subtending +
pubescent +  and glabrous +
mucronate +  and acute +
unequal +
uncinate +
solid +  and hollow +
pubescent +  and glabrous +
rounded +, elliptic +  and lanceolate +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
herbaceous +  and coriaceous +
laciniate +, truncate +  and obtuse +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
membranous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
concealed +  and prominent +
pubescent +  and glabrous +
3 +  and 5 +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
reduced +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
dry +  and fleshy +
pilose +, pubescent +  and glabrous +
1 +  and 60 +
not viviparous +
elliptic +  and lanceolate terete +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Gramineae +
Bromus frondosus +
Bromus sect. Bromopsis +
species +
membranous +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
aquatic +  and terrestrial +