E-Flora BC: Electronic Atlas of the Flora of British Columbia

Bromus secalinus L.
rye brome
Poaceae (Grass family)

Introduction to Vascular Plants

© Lieuwe Haanstra  Email the photographer   (Photo ID #75196)

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Distribution of Bromus secalinus
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Species Information

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General:
Annual grass from fibrous roots; stems smooth or hairy only at the nodes, 30-80 cm tall.
Leaves:
Sheaths usually smooth to finely hairy; blades (2) 3-8 mm wide, flat, usually somewhat soft-hairy (to smooth); ear-shaped lobes lacking at the leaf-bases; ligules smooth or sparsely hairy on the outer surfaces, minutely or coarsely jagged, (2) 1.5-3 mm long.
Flowers:
Inflorescence a loose, usually nodding panicle, (5) 7-20 cm long, with all the branches and flowers on 1 side of the axis; spikelets 5- to 9-flowered, strongly compressed, smooth to short-hairy, 10-20 mm long; florets ultimately spreading, exposing the curved rachilla joints; lower glumes lanceolate, 3- to 5-nerved, 4-6 mm long, the upper ones broader, cylindrical or more or less egg-shaped to lanceolate, 5- (7-) nerved, 5-8 mm long; lemmas rough, without prominent nerves, somewhat compressed, (6) 7-9 mm long, the margins usually in-rolled, rounded at the tips, bidentate, awned, the awns about 5 mm long, flattened, in age usually broadly spreading to somewhat zig-zagging, sometimes reduced to 1-2 mm long; paleas about equalling or exceeding the lemmas; anthers about 1 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry roadsides, fields and waste places in the lowland, steppe and montane zones; rare in WC and S BC, known recently only from Hazelton and New Westminster; introduced from Eurasia.

Source: The Illustrated Flora of British Columbia

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

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General References