Bromus grandis

(Shear) Hitchc.
Common names: Tall brome
Synonyms: Bromus orcuttianus var. grandis
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 70-180 cm, erect; nodes 3-7, pubescent or puberulent; internodes pubescent, puberulent, or glabrous. Sheaths densely pubescent, hairs to 1 mm, collars with hairs to 2 mm, midrib of the culm leaves not abruptly narrowed just below the collar; auricles sometimes present; ligules 1-3 mm, densely pubescent to pilose, obtuse, lacerate; blades (13) 18-38 cm long, 3-12 mm wide, flat, sparsely to densely pubescent on both surfaces. Panicles 14-27 cm long, very open, nodding; branches flexuous, usually widely spreading, with spikelets near the tips. Spikelets 20-37 (45) mm, elliptic to lanceolate, terete to moderately laterally compressed, with 4-9 (10) florets. Glumes pubescent, with prominent veins, margins not bronze-tinged; lower glumes 4-8.5 mm, (1) 3-veined; upper glumes 7-10 mm, 3 (5) -veined, not mucronate; lemmas 9.5-14 mm, lanceolate, rounded over the midvein, backs pilose, pubescent, or glabrous, margins pilose, not bronze-tinged, apices subulate to acute, entire; awns 3-7 mm, straight, arising less than 1.5 mm below the lemma apices; anthers 3-6 mm. 2n = 14.

Discussion

Bromus grandis grows on dry, wooded or open slopes, at elevations of 350-2500 m. Its range extends from central California into Baja California, Mexico.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Bromus grandis"
membranous +  and scarious +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Subulate (?) +  and Acute (?) +
Leon E. Pavlickf +
(Shear) Hitchc. +
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 +, pubescent +  and pilose +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
18 cm180 mm <br />0.18 m <br /> (38 cm380 mm <br />0.38 m <br />) +
not evident +
cross +, linear +  and narrowly lanceolate +
3mm;12mm +
spikelike +
Tall brome +
not branching +
70 cm700 mm <br />0.7 m <br /> (180 cm1,800 mm <br />1.8 m <br />) +
not woody +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
4 +  and 9 +
terete +  and laterally compressed +
1-9(11)-veined +
always shorter +  and usually shorter +
lanceolate +
subtending +
mucronate +  and acute +
unequal +
uncinate +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
solid +  and hollow +
glabrous +, puberulent +  and pubescent +
pubescent +  and glabrous +
rounded +  and lanceolate +
0.95 cm9.5 mm <br />0.0095 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
herbaceous +  and coriaceous +
densely pubescent +  and pilose +
lacerate +  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 +
0.4 cm4 mm <br />0.004 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
not bronze-tinged +
concealed +  and prominent +
puberulent +  and pubescent +
3 +  and 7 +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
reduced +
14cm +  and 27cm +
dry +  and fleshy +
1 +  and 60 +
not viviparous +
elliptic +  and lanceolate terete +
2 cm20 mm <br />0.02 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Bromus orcuttianus var. grandis +
Bromus grandis +
Bromus sect. Bromopsis +
species +
membranous +
not mucronate +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
aquatic +  and terrestrial +