UW Burke Herbarium species comparison

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Bromus tectorum

Bromus inermis

cheat grass

smooth brome
Habit Strongly rhizomatous perennial, the culms 2-12 dm. tall.
Leaves

Sheaths closed, glabrous or pubescent;

auricles usually present, 1 mm. long;

ligules 0.5-2.5 mm. long;

blades flat, 3-10 mm. broad.
Flowers

Inflorescence a narrow panicle 7-20 cm. long, the branches ascending;

spikelets narrow, tapered from near the base, 5- to 13-flowered, 1.5-3 cm. long, purplish-tinged;

glumes with a transparent margin, the first 1-nerved, 4-6 mm. long, the second 3-nerved, 6-10 mm. long;

lemmas rounded on the back, obtuse, usually unawned;

anthers 3, exerted.

Bromus tectorum

Bromus inermis
Flowering time March-June June-August
Habitat Sagebrush desert, grasslands, prairies, meadows, balds, roadsides, wastelots, and other distrubed open areas from low to middle elevations. Roadsides, fields, ditches, meadows, parks, and other disturbed open areas; often planted for hay and soil stabilization.
Distribution
Occurring on both sides of the Cascades crest in Washington; Alaska to Baja California, Mexico, east across North America to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Occurring chiefly east of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from Europe Introduced from Eurasia
Conservation status Not of concern Not of concern
Sibling taxa
B. arenarius, B. briziformis, B. ciliatus, B. commutatus, B. diandrus, B. erectus, B. hordeaceus, B. inermis, B. japonicus, B. madritensis, B. orcuttianus, B. pacificus, B. pumpellianus, B. racemosus, B. rubens, B. secalinus, B. sitchensis, B. squarrosus, B. sterilis, B. suksdorfii, B. vulgaris
B. arenarius, B. briziformis, B. ciliatus, B. commutatus, B. diandrus, B. erectus, B. hordeaceus, B. japonicus, B. madritensis, B. orcuttianus, B. pacificus, B. pumpellianus, B. racemosus, B. rubens, B. secalinus, B. sitchensis, B. squarrosus, B. sterilis, B. suksdorfii, B. tectorum, B. vulgaris
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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