UW Burke Herbarium species comparison

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Hordeum murinum

mouse barley, smooth barley, wall barley
Habit Glabrous annual, the culms 2-4 dm. tall.
Leaves

Sheaths open, glabrous;

auricles well-developed, 1-2 mm. long;

ligules barely 1 mm. long;

blades 3-4 mm. broad, sparsely hairy.
Flowers

Inflorescence a terminal spike 4-7 cm. long, sometimes partially enclosed in the inflated upper sheath;

spikelets 3 per node, 1-flowered, all well developed; central spikelet sessile, the glumes 2-3 cm. long, broadened and long-hairy basally;

lateral spikelets short-pedicillate, the glumes narrower than those of the central spikelet;

rachilla of the lateral spikelets prolonged past the floret 2.5-3.5 mm., bristle-like.

Hordeum murinum
Flowering time June-July
Habitat Fields, meadows, roadsides, wastelots, and other disturbed areas.
Distribution
Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across most of North America to the Atlantic Coast.
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from Eurasia
Conservation status Not of concern
Sibling taxa
H. brachyantherum, H. depressum, H. jubatum, H. marinum, H. pusillum, H. vulgare
Subordinate taxa
H. murinum ssp. glaucum, H. murinum ssp. leporinum, H. murinum ssp. murinum
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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