Hordeum murinum subsp. murinum
wall barley
Poaceae (Grass family)

Introduction to Vascular Plants

Photograph

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Map

E-Flora BC Static Map

Distribution of Hordeum murinum subsp. murinum
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Species Information

General:
Annual grass from fibrous roots; stems smooth, 20-40 (50) cm tall.
Leaves:
Sheaths open, smooth; blades usually sparsely stiff-hairy to soft-hairy, mostly 3-4 (5) mm wide; ear-shaped lobes well-developed at most leaf-bases, 1-2 mm long; ligules scarcely 1 mm long.
Flowers:
Inflorescence a spike, 4-7 cm long, well exserted to partially enclosed by the inflated upper sheath, the rachis disarticulating, the segments 1.7-3 mm long; spikelets 3 to a node, all well-developed, the lateral ones short-stalked; glumes of the central spikelets 2-3 cm long, stalked or unstalked, long stiff-hairy basally, central florets slightly shorter to much shorter than the lateral florets; the rachillas prolonged past the florets for 2.5-3.5 mm, bristlelike; anthers 0.4-1.3 mm long.
Notes:
Three subspecies occur in BC:

1. Central spikelet florets unstalked or nearly unstalked, the stalk if present less than 0.5 mm long; inner glumes of the lateral spikelets narrower than either glume of the central spikelets..................... ssp. Murinum

1. Central spikelet florets stalked, the stalks 1-2 mm long; inner glumes of the lateral spikelets as wide as those of the central spikelets.

2. Central florets slightly shorter than the lateral florets; anthers 0.5 mm long or less.................... ssp. glaucum (Steud.) Tzvelev

2. Central florets much shorter than the lateral florets; anthers 0.8-1.3 mm long.................... ssp. leporinum (Link) Asch. & Grabn.

SourceThe Illustrated Flora of British Columbia

Illustration

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Habitat and Range

Dry roadsides and waste areas in the lowland, steppe and montane zones; rare to infrequent in SW BC (all ssp.) and SC BC (ssp. murinum); introduced from Europe.

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Critesion murinum (L.) A. Löve