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

Eragrostis pectinacea var. pectinacea (Michx.) Nees ex Steud.
Poaceae (Grass family)

Introduction to Vascular Plants

© Frank Lomer  Email the photographer   (Photo ID #27018)

E-Flora BC Static Map
Distribution of Eragrostis pectinacea var. pectinacea
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Species Information

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Annual, tufted grass from fibrous roots; stems several, erect to abruptly bent, spreading, 10-80 cm tall.
Sheaths fringed with fine hairs at the summit, the hairs up to 4 mm long; blades 2-20 cm long, 1-4.5 mm wide, flat to in-rolled, more or less rough short-hairy above and smooth below; ligules 0.2-0.5 mm long, fringed with fine hairs.
Inflorescence an open, sometimes congested, egg-shaped to pyramidal panicle, 5-25 cm long, 3-12 (15) cm wide, the branches 0.6-8.5 cm long, spreading 0-80degree from the stem axis, solitary or paired on the lowest 2 nodes; spikelets appressed to the branches, 3.5-11 mm long, 1.2-2.5 mm wide, 6- to 22-flowered, linear to cylindrical, flattened, greyish, yellowish-brown, or dark reddish-purple; glumes 0.5-1.7 mm long, awl-like to egg-shaped or lanceolate, narrow, 1-nerved, translucent, the lower glumes 0.5-1.1 (1.5) mm long, the upper glumes 1-1.7 mm long, usually broader than the lower ones; lemmas 1-2.2 mm long, egg-shaped or lanceolate, translucent to membranous, more or less keeled, with conspicuous lateral nerves, greyish-green below, reddish-purple above, the tips sharp-pointed; paleas 1-2 mm long, persistent, translucent to membranous, the tips rounded; stamens 3, anthers 0.2-0.7 mm long, purplish.
Eragrostis pectinacea is often difficult to separate from E. pilosa. The lemmas of E. pectinacea have more conspicuous lateral nerves than those of E. pilosa.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to dry sandy roadsides and waste places in the lowland and steppe zones; rare in SW (where probably introduced) and SC BC; disjunctly E to ON, PQ and NS and S to ME, MA, PA, SC, FL, MS, LA, TX, NM, AZ and CA.

Source: The Illustrated Flora of British Columbia

Synonyms and Alternate Names

Eragrostis caroliniana auct. non (Spreng.) Scribn.
Eragrostis diffusa Buckley
Eragrostis purshii hort. ex Schrad.
Poa pectinacea Michx.

Taxonomic and Nomenclatural Links

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General References