. 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 92. GRASS FAMILY. 259. 19. Poa compressa L. Wire-grass. Flat-stemmed Meadow-grass. English Blue-grass. Fig. 622. Poa compressa L. Sp. PI. 69. 1753. Pale bluish green, glabrous, culms 6-20 tall, decumbent at the base, from long horizontal rootstocks, smooth, much flattened. Sheaths loose, flattened, shorter than the inter- nodes; ligule i" long; blade
. 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 92. GRASS FAMILY. 259. 19. Poa compressa L. Wire-grass. Flat-stemmed Meadow-grass. English Blue-grass. Fig. 622. Poa compressa L. Sp. PI. 69. 1753. Pale bluish green, glabrous, culms 6-20 tall, decumbent at the base, from long horizontal rootstocks, smooth, much flattened. Sheaths loose, flattened, shorter than the inter- nodes; ligule i" long; blades i'-4' long, about 1" wide, smooth beneath, rough above; panicle usually contracted, the branches erect or ascending, 1' long or less, spikelet- bearing nearly to the base; spikelets 3-9-flowered, 1V-3" long; lower scales acute, 3-nerved; flowering scales i"-ii" long, obscurely 3-nerved, the nerves sparingly pubescent toward the base. Waste places and cultivated grounds and woods almost throughout North America. Ascends to 2100 ft. in Virginia. Naturalized from Europe. Native also of Asia. Varies from weak and slender to quite stiff. Squitch-grass. June-Aug. 20. Poa arachnifera Torr. Texas Blue-grass. Fig. 623. Poa arachnifera Torr. Marcy's Exped. 301. 1853. Culms tufted, i°-3° tall, smosth and glabrous, from running rootstocks; sterile shoots from one-half as long as the culms to equalling them. Sheaths longer than the internodes, smooth or roughish, hyaline on the margins; ligule a short membranous ring; blades linear, erect, usually folded when dry, smooth beneath, rough above, i4'-9' long, iV's" broad, abruptly acute; panicle dense and contracted, sometimes interrupted below, z'-6¥ long, 4'-ii' broad, its branches ascend- ing or erect; spikelets numerous, 4-7-flowered, the scales acuminate, the empty ones hispidulous on the midnerve; flowering scales 2"-2j" long, often pointed, pubescent at the base with copious long cobwebby hairs, 5-
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
