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

Calamovilfa longifolia (Hook.) Scribn. var. longifolia
prairie sandgrass (prairie sandreed)
Poaceae (Grass family)

Introduction to Vascular Plants
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Distribution of Calamovilfa longifolia var. longifolia
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Species Information

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Perennial, tough, wiry grass from well-developed rhizomes; stems semi-solid, 60-150 cm tall.
Sheaths open, smooth to soft long-hairy, the hairs at the throats 2-3 mm long; blades 3-8 mm wide, strongly in-rolled, narrowed to long, slender tips; ligules scarcely 1 mm long, of short hairs.
Inflorescence a large, narrow to somewhat spreading panicle up to 40 cm long, the lower branches more or less spreading, 3-6 cm long; spikelets 1-flowered, articulating above the glumes, pale green to purplish; glumes (3.5) 4.5-7 mm long, long-pointed, the lower ones 1.5-2.5 mm shorter than the upper ones; lemmas usually intermediate in length between the 2 glumes, smooth, pointed to blunt, unawned, obscurely nerved, the callus hairs abundant, about 1/2 as long as the lemmas; rachillas not prolonged beyond the paleas; paleas from slightly shorter to longer than the lemmas; lodicules broadly egg-shaped, shallowly lobed, about 0.8 mm long and wide; ovaries smooth; anthers 0.5-4.5 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry sandy slopes, shrublands and open forests in the steppe and lower montane zones; infrequent in SE BC; E to MB and S to IN, IA, KS, NM and N ID.

Source: The Illustrated Flora of British Columbia


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.

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