. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus 52. GRASS FAMILY. 217 1. Trisetum spicatum (L.) Richter. Narrow False Oat. Fig. 523. Aira spicata L. Sp. PI. 64. 1753. Aira subspicata L. Syst. Veg. Ed. io, 673. 1759. Avena mollis Michx. Fl. Bor. Am. 1: 72. 1803. Trisetum subspicatum Beauv. Agrost. 180. 1812. T. spicatum Richter, PI. Europ. 1: 59. 1890. Softly pubescent or glabrous, culms 6'-2G tall, ere
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. Genus 52. GRASS FAMILY. 217 1. Trisetum spicatum (L.) Richter. Narrow False Oat. Fig. 523. Aira spicata L. Sp. PI. 64. 1753. Aira subspicata L. Syst. Veg. Ed. io, 673. 1759. Avena mollis Michx. Fl. Bor. Am. 1: 72. 1803. Trisetum subspicatum Beauv. Agrost. 180. 1812. T. spicatum Richter, PI. Europ. 1: 59. 1890. Softly pubescent or glabrous, culms 6'-2G tall, erect, simple. Sheaths usually shorter than the internodes; ligule 4"-l" long; blades i'-4' long, 4"-2" wide; panicle spike-like, i'-s' in length, often interrupted below, its branches i4' or less long, erect; spikelets 2-3-flowered, the empty scales hispid on the keel, shining, the second about 24" long, the first shorter; flowering scales 2"- 24" long, acuminate, scabrous, each bearing a long bent and somewhat twisted awn. In rocky places, Labrador to Alaska, south on the moun- tains to North Carolina, New Mexico and California. Also in Europe and Asia. Downy Oat-grass. 2. Trisetum flavescens (L.) Beauv. Yellow False Oat. Fig. 524. Avena flavescens L. Sp. PI. 809. 1753. Trisetum pratense Pers. Syn. 1 : 97. 1805. T. flavescens Beauv. Agrost. 88. 1812. Culms ii°-2i° tall, erect, simple, smooth and gla- brous. Sheaths shorter than the internodes, more or less pubescent; ligule 4" long; blades i4'-s' long, i"-3" wide, scabrous, sometimes sparingly hairy; panicle open, 2'-s' in length, the branches ascending or erect, somewhat flexuous, naked below, the lower i'-2' long; spikelets 3-4-flowered; empty scales smooth and glabrous, the second acute, 24" long, the first about half as long, narrower, acuminate; flow- ering scales 24"-3" long, scabrous, bearing a long bent and twisted awn. Introduced into Missouri
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
