Basin Brome - Bromus polyanthus
Loosely cespitose perennials; culms 60-120 cm tall, erect, glabrous or puberulent. Leaf sheaths smooth or scabrous, sometimes hairy except at throat; auricles absent; ligules (1-)2-2.5 mm long, glabrous, obtuse, erose; blades 10-31 cm long, 2-9 mm wide, glabrous or scabrous (rarely hairy near collar). Panicles 10-20 cm long, open to somewhat contracted; lower branches (1)2-3 per node, erect, shorter than 10 cm long, with 1-2 spikelets variously distributed. Spikelets 20-35 mm, strongly compressed, not crowded or overlapping, florets 6-11. Lower glumes mostly 7-10 mm long, 3-veined; upper glumes mostly 9-11 mm long, 5-7 veined, shorter than the lowest lemma; lemmas 12-15 mm long, strongly compressed-keeled (at least distally), glabrous or sometimes scabrous, 7-9 veined (veins usually flush), apex entire or with acute teeth less than 1 mm long, awns 4-7 mm long; anthers 1-5 mm (adapted from: Pavlick & Anderton, 2007, Flora N. America, Vol. 24).
BC to northwest MT south to CA and west TX (Kartesz in prep. 2012).
Open slopes and meadows (Pavlick & Anderton, 2007, Flora N. America, Vol. 24).
- Additional ReferencesLegend: View Online Publication
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- Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.