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Brachypodium pinnatum P.Beauv.  
Family: Poaceae
Heath False Brome, more...Heath Falsebrome, Tor Grass
[Agropyron pinnatum (L.) Chevall., moreBromus corniculatus Lam., Bromus pinnatus L.]
Brachypodium pinnatum image
  • FNA
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Michael B. Piep. Flora of North America

Plants perennial; rhizomatous, sometimes subcespitose, rhizomes scaly, sparingly branched. Culms 30-120 cm, erect, stiff, usually unbranched, with 2-3 nodes, not narrowed below the racemes, internodes smooth, usually glabrous; nodes pub-escent, often scabrous. Sheaths rounded, smooth, glabrous or hairy, bases sometimes shortly pubescent; ligules 0.8-2.5 mm, truncate; blades 6-45 cm long, 2-7(10) mm wide, flat, lax, dark green, abaxial surfaces scabrous, not shiny, adaxial surfaces sparsely hairy, primary veins conspicuous, separated by finer secondary veins. Racemes 4-25 cm, erect, sometimes nodding, with (3)6-15 spikelets; pedicels 1-2 mm. Spikelets 15-50 mm, terete, with (3)7-24 florets. Glumes lanceolate to narrowly ovate, acute, firm, glabrous; lower glumes 3-6 mm, 3-6-veined; upper glumes 3-8 mm, 5-9-veined; lemmas 6-11 mm, oblong to lanceolate, usually hairy, 7-veined, awned, awns 1-7 mm, straight; paleas (5)7-9(10) mm, narrowly oblong, 2-keeled, keels ciliate; anthers 3.5-5.5 mm. Caryopses 6-7.2 mm. 2n = 14, 16, 28.

Brachypodium pinnatum is native to Eurasia. It is reportedly established in Sonoma County, California, and in Massachusetts. In its native range it prefers open woodlands, forest edges, and grassland habitats, and is fairly tolerant of hot, dry conditions.

Brachypodium pinnatum
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Genevieve J Kline
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The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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