familyPoaceae
subfamilyPoaceae subfam. Pooideae
tribePoaceae tribe Bromeae
genusBromus
sectionBromus sect. Bromopsis
speciesBromus grandis

Bromus grandis

(Shear) Hitchc.
Leon E. Pavlickf
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.

Distribution

Calif.

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"
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2n chromosome quantity
14 +
Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
Adaxial cell presence
absent +
Adaxial cell shape
bulliform +
Adaxial ligule architecture or pubescence or shape
ciliate +
Adaxial ligule presence
absent +
Adaxial ligule texture
membranous +  and scarious +
Anther atypical quantity
2 (?) +
Anther quantity
3 +
Anther some measurement
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Apex architecture or shape
entire +
Apex pubescence
hairy +
Apex shape
subulate +  and acute +
Arm cell presence
absent +
Auricle presence
absent +
Author
Leon E. Pavlickf +
Authority
(Shear) Hitchc. +
Awn architecture
unbranched +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn course
straight +
Awn fusion
distinct +
Awn orientation
arising +
Awn position
subterminal +  and terminal +
Awn quantity
3 +
Awn shape
geniculate +
Awn some measurement
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Back pubescence
glabrous +, pubescent +  and pilose +
Back shape
keeled +  and rounded +
Basal floret quantity
1 +  and 2 +
Base architecture
pseudopetiolate +  and branching +
Base arrangement
close +
Base fusion
free +
Base position
intravaginal +, extravaginal +, branching +  and basal +
Base size
swelling +
Base texture
hard +
Base width
thick +
Blade arrangement
parallel +
Blade arrangement or course or shape
linear +
Blade length
18 cm180 mm <br />0.18 m <br /> (38 cm380 mm <br />0.38 m <br />) +
Blade prominence
not evident +
Blade prominence or shape
flat +
Blade pubescence
pubescent +
Blade shape
cross +, linear +  and narrowly lanceolate +
Blade shape or vernation
involute +
Blade width
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Branch course
flexuous +
Branch orientation
spreading +
Branch shape
spikelike +
Callus development
developed +
Callus pubescence
glabrous +
Common name
Tall brome +
Culm architecture
not branching +
Culm architecture or arrangement or growth form
solitary +
Culm duration
annual +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm orientation
erect +
Culm some measurement
70 cm700 mm <br />0.7 m <br /> (180 cm1,800 mm <br />1.8 m <br />) +
Culm texture
not woody +
Distal floret size
reduced +
Distribution
Calif. +
Embryo quantity
1/6 +
Endosperm texture
liquid +, soft +  and hard +
Filament shape
capillary +
Floret architecture
pistillate +  and staminate +
Floret arrangement
adjacent +
Floret atypical quantity
10 +
Floret length or size
sometimes longer +
Floret quantity
4 +  and 9 +
Floret reproduction
bisexual +
Floret shape
terete +  and laterally compressed +
Glume architecture
1-9(11)-veined +
Glume architecture or shape
awned +
Glume height or length or size
always shorter +  and usually shorter +
Glume length
lanceolate +
Glume position
subtending +
Glume presence
absent +
Glume pubescence
pubescent +
Glume quantity
1/4 +
Glume shape
mucronate +  and acute +
Glume size
unequal +
Glume variability
equal +
Hair shape
uncinate +
Hair some measurement
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum shape
Ovate (?) +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Cindy Roché +
Inflorescence architecture
compound +
Inflorescence position or structure subtype
terminal +
Inflorescence size
reduced +
Internode architecture
solid +  and hollow +
Internode presence
absent +
Internode pubescence
glabrous +, puberulent +  and pubescent +
Layer presence
absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Lemma architecture
5-13-veined +
Lemma architecture or shape
not +  and awned +
Lemma arrangement
adjacent +
Lemma pubescence
pubescent +  and glabrous +
Lemma shape
rounded +  and lanceolate +
Lemma some measurement
0.95 cm9.5 mm <br />0.0095 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Lemma texture
herbaceous +  and coriaceous +
Ligule architecture or relief
erose +
Ligule presence
absent +
Ligule pubescence
densely pubescent +  and pilose +
Ligule shape
lacerate +  and obtuse +
Ligule some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Ligule texture
membranous +
Lodicule architecture
not veined +
Lodicule architecture or pubescence or shape
ciliate +
Lodicule architecture or shape
truncate +
Lodicule prominence
inconspicuous +
Lodicule pubescence
glabrous +
Lodicule quantity
2 +
Lodicule shape
lanceolate +
Lodicule texture
fleshy +  and membranous +
Lower glume architecture
(1)3-veined +
Lower glume some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
Margin coloration
not bronze-tinged +
Margin pubescence
pilose +
Midrib architecture
simple +
Node prominence
concealed +  and prominent +
Node pubescence
puberulent +  and pubescent +
Node quantity
3 +  and 7 +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
hairy +  and glabrous +
Palea architecture or pubescence or shape
ciliate +
Palea development
well-developed +
Palea height or length or size
usually shorter +
Palea presence
absent +
Palea shape
keeled +
Palea size
reduced +
Panicle architecture
open +
Panicle length
14cm +  and 27cm +
Panicle orientation
nodding +
Papilla presence
absent +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Pseudopetiole presence
absent +
Raceme architecture
open +
Rachilla length
prolonged +
Rachis prominence
evident +
Reference
None +
Sheath architecture
open +
Sheath condition
closed +
Sheath length
full +
Sheath pubescence
pubescent +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V24/V24 296.xml +
Spike architecture
ebracteate +
Spikelet arrangement
mixed +
Spikelet atypical some measurement
45 +
Spikelet fixation
attached +
Spikelet quantity
1 +  and 60 +
Spikelet reproduction
not viviparous +
Spikelet shape
elliptic +  and lanceolate terete +
Spikelet some measurement
2 cm20 mm <br />0.02 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
simple +  and compound +
Style-branch atypical quantity
4 +  and 1 +
Style-branch quantity
2 (?) +  and 3 (?) +
Style quantity
2 +
Subsidiary-cell architecture
parallel-sided +
Synonyms
Bromus orcuttianus var. grandis +
Taxon family
Poaceae +
Taxon name
Bromus grandis +
Taxon parent
Bromus sect. Bromopsis +
Taxon rank
species +
Terminal floret reproduction
sexual +
Tissue coloration
hyaline +
Tissue texture
membranous +
Upper glume architecture
3(5)-veined +
Upper glume shape
not mucronate +
Upper glume some measurement
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Vein arrangement
converging +
Vein presence
absent +
Vein prominence
prominent +
Vein quantity
2 (?) +
Vein size
major +
Volume
Volume 24 +
Whole organism architecture
not rhizomatous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
perennial +
Whole organism growth form
plant +
Whole organism growth form or habitat
aquatic +  and terrestrial +
X chromosome quantity
7 +