Bromus lepidus

Holmb.
Common names: Scaly brome
Treatment appears in FNA Volume 24. Treatment on page 230.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants annual, rarely biennial. Culms 5-60 cm, erect. Sheaths pilose; ligules 0.5-1 mm, hairy, obtuse; blades 3-13 cm long, 2-4 mm wide. Panicles 2-10 cm long, 1.5-3 cm wide, erect, contracted or loose; branches shorter than the spikelets, ascending, slightly curved or straight. Spikelets 6-15 mm, lanceolate, shiny, terete to moderately laterally compressed; florets 5-12, bases concealed at maturity; rachilla internodes concealed at maturity. Glumes glabrous; lower glumes 4-4.6 mm, 3-5-veined; upper glumes 5.2-5.4 mm, 7-veined; lemmas 4.5-6.5 mm long, 1.5-1.7 mm wide, elliptic, glabrous, distinctly 7-veined, rounded over the midvein, margins broadly hyaline, sharply angled, not inrolled at maturity, apices notched, notch at least 0.6 mm deep; awns 2-6 mm, straight, arising from the base of the apical notch but less than 1.5 mm below the lemma apices; anthers 0.5-2 mm. Caryopses longer than the paleas, thin, weakly inrolled or flat. 2n = 28.

Discussion

Bromus lepidus grows in fields and waste places. It is native to Europe, and is reported from New York and Massachusetts; it probably also occurs elsewhere in the Flora region.

Bromus lepidus often resembles B. hordeaceus subsp. pseudothominei in lemma characteristics (e.g., length, smoothness, and margin angle), so that either may be misinterpreted. Bromus lepidus differs in the wide apical notch of its lemmas, and the length of its caryopses relative to the paleas.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Bromus lepidus"
membranous +  and scarious +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
awned +  and entire +
Leon E. Pavlickf +
Holmb. +
divaricate +
3 (?) +  and 0 (?) +
straight +
distinct +
subterminal +  and terminal +
geniculate +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
3 cm30 mm <br />0.03 m <br /> (13 cm130 mm <br />0.13 m <br />) +
not evident +
cross +, linear +  and narrowly lanceolate +
2mm;4mm +
straight +  and curved +
spikelike +
Scaly brome +
not branching +
5 cm50 mm <br />0.05 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
Conn. +, N.Y. +  and Mass. +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
5 +  and 12 +
terete +  and laterally compressed +
1-9(11)-veined +
always shorter +  and usually shorter +
lanceolate +
subtending +
mucronate +  and acute +
unequal +
uncinate +
solid +  and hollow +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
rounded +
herbaceous +  and coriaceous +
1.5mm +  and 1.7mm +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
membranous +
inconspicuous +
lanceolate +
fleshy +  and membranous +
0.4 cm4 mm <br />0.004 m <br /> (0.46 cm4.6 mm <br />0.0046 m <br />) +
concealed +  and prominent +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
reduced +
2cm +  and 10cm +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
dry +  and fleshy +
converging +  and parallel +
1 +  and 60 +
not viviparous +
terete +  and moderately laterally compressed +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Gramineae +
Bromus lepidus +
Bromus sect. Bromus +
species +
membranous +
1 cm10 mm <br />0.01 m <br /> (?) +
0.52 cm5.2 mm <br />0.0052 m <br /> (0.54 cm5.4 mm <br />0.0054 m <br />) +
biennial +  and annual +
aquatic +  and terrestrial +