Bromus madritensis

L.
Common names: Compact brome
Introduced
Treatment appears in FNA Volume 24. Treatment on page 226.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants annual. Culms 34-70 cm, erect or ascending, glabrous or puberulent below the panicle. Sheaths densely short-pubescent or glabrous; auricles absent; ligules 1.5-2 mm, glabrous, obtuse, erose; blades 4-20 cm long, 1-5 mm wide, flat, both surfaces pubescent or glabrous. Panicles 3-15 cm long, 2-6 cm wide, open, erect; branches (at least some) 1-3+ cm, ascending to spreading, never drooping, usually visible, with 1 or 2 spikelets. Spikelets 30-50 mm, longer than the panicle branches, not densely crowded, with parallel sides or widening distally, moderately laterally compressed, with 6-10 florets. Glumes pilose, margins hyaline; lower glumes 5-10 mm, 1-veined; upper glumes 10-15 mm, 3-veined; lemmas 12-20 mm, linear-lanceolate, often arcuate, pubescent, with longer hairs near the margins, 5-7-veined, rounded over the midvein, margins hyaline, apices acuminate, teeth 1.5-3 mm; awns 12-23 mm, straight or arcuate, arising 1.5 mm or more below the lemma apices; anthers 0.5-1 mm. 2n = 28.

Distribution

Md., Ill., Mich., Va., Calif., Pacific Islands (Hawaii), Miss., Ariz., Oreg., Nev.

Discussion

Bromus madritensis is native to southern and western Europe. It is now established in North America, and grows in disturbed soil, waste places, banks, and road verges in southern Oregon, California, and Arizona.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Bromus madritensis"
membranous +  and scarious +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
awned +  and entire +
Leon E. Pavlickf +
1 (?) +  and 3 (?) +
arcuate +  and straight +
distinct +
subterminal +  and terminal +
geniculate +
1.5 cm15 mm <br />0.015 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
4 cm40 mm <br />0.04 m <br /> (20 cm200 mm <br />0.2 m <br />) +
not evident +
cross +, linear +  and narrowly lanceolate +
1mm;5mm +
drooping;ascending;spreading +
spikelike +
Compact brome +
not branching +
ascending +  and erect +
puberulent +  and glabrous +
34 cm340 mm <br />0.34 m <br /> (70 cm700 mm <br />0.7 m <br />) +
not woody +
Md. +, Ill. +, Mich. +, Va. +, Calif. +, Pacific Islands (Hawaii) +, Miss. +, Ariz. +, Oreg. +  and Nev. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
4 +  and 11 +
compressed +
widening +
1-9(11)-veined +
always shorter +  and usually shorter +
lanceolate +
subtending +
mucronate +  and acute +
unequal +
uncinate +
solid +  and hollow +
rounded +  and linear-lanceolate +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
herbaceous +  and coriaceous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
membranous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
concealed +  and prominent +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
reduced +
3cm +  and 15cm +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
dry +  and fleshy +
glabrous +  and short-pubescent +
Introduced +
1 +  and 60 +
not viviparous +
terete +  and moderately laterally compressed +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
glabrous +  and pubescent +
Gramineae +
Bromus madritensis +
Bromus sect. Genea +
species +
membranous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
aquatic +  and terrestrial +