This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol1", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
1806. B. unioloides H.B.K. Nov. Gen. 1: 151. 1815. Bromus Schraderi Kunth, Enum. 1: 416. 1833.
Culms 6'-3° tall, erect, simple, smooth and glabrous. Sheaths usually shorter than the internodes, the lower often overlapping, smooth or rough, and glabrous or frequently pubescent; ligule 1"-2" long; blades 3-13' long, 1"-4" wide, usually rough, at least above; panicle 2'-10' in length, the branches erect or ascending, or the lower branches of the larger panicles widely spreading; spikelets much compressed, 6-10-flow-ered; empty scales acute, the first 3-5-nerved, the second longer, 5-9-nerved; flowering scales 6"-8" long, very acute, minutely scabrous, bearing an awn less than 1" long or awnless.