Bromus arizonicus
Bromus vulgaris
Columbia brome
internodes glabrous;
nodes (3)4–6(7), usually pilose.
sheaths pilose or glabrous;
ligules 2–6 mm;
blades 13–25(33)cm × up to 14 mm; flat; upper and lower surfaces usually glabrous, sometimes pilose.
10–15 cm, usually narrow, nodding; the branches ascending to appressed.
15–30 mm, elliptic to lanceolate; terete to moderately laterally compressed, with (3)4–9 florets.
glabrous or pilose;
lower glumes 5–8 mm, 1(3)-veined;
upper glumes 8–12 mm, 3-veined.
8–15 mm, lanceolate, rounded over the back; backs sparsely hairy or glabrous;
margins coarsely pubescent, sometimes glabrous;
tips subulate to acute; entire, awned;
lemma awns (4)6– 12 mm; straight.
2–4 mm.
=14.
Bromus arizonicus
Bromus vulgaris
Forests, in shade or partial shade. 0–2400m. BW, Casc, CR, ECas, Est, Sisk, WV. CA, ID, WA; north to British Columbia, northeast to Alberta, east to WY. Native.
Bromus vulgaris is a common forest grass of western Oregon and the Blue and Wallowa mountains. Its closed sheaths with spreading hairs and its long, narrow spikelets distinguish it from most other woodland grasses. Invasive Brachypodium sylvaticum has similar nodding inflorescences with long spikelets, but all the spikelets are connected directly to the inflorescence axis by very short, unbranched stalks, and the leaf sheath margins are overlapping.
Barbara Wilson, Richard Brainerd, Nick Otting
- Local floras:
BC, 
CA, 
OR, 
WA - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
PNW Herbaria 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
