. 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 41. GRASS FAMILY. 41. POLYPOGON Desf. Fl. Atl. 1: 66. 1798. Mostly annual grasses, with decumbent or rarely erect culms, flat leaf-blades and spike- like panicles. Spikelets .i-flowered; scales 3; the 2 outer empty, each extended into an awn; third scale smaller, generally hyaline, short-awned from below the apex, subtending a palet and perfect flower; pa
. 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 41. GRASS FAMILY. 41. POLYPOGON Desf. Fl. Atl. 1: 66. 1798. Mostly annual grasses, with decumbent or rarely erect culms, flat leaf-blades and spike- like panicles. Spikelets .i-flowered; scales 3; the 2 outer empty, each extended into an awn; third scale smaller, generally hyaline, short-awned from below the apex, subtending a palet and perfect flower; palet shorter than the scale. Stamens 1-3. Styles short, distinct. Stigmas plumose.' Grain free, encLosed in the scale and palet. [Greek, in allusion to the many long awns which resemble a beard.] About 10 species, widely distributed in temperate and warm regions, rare in the tropics. Type species: Alopecurus Monspeliensis L. i. Polypogon Monspeliensis (L.) Desf. Annual Beard-grass. Fig. 483. Alopecurus Monspeliensis L. Sp. PI. 89. 1753. P. Monspeliensis Desf. Fl. Atl. 1: 67. 1798. Culms 2° tall or less, erect from a usually de- cumbent base, smooth and glabrous. Sheaths generally shorter than the internodes, loose, sometimes slightly scabrous; ligule li"-4" long; blades i¥-6' long, 1V-3" wide, scabrous, espe- cially above; panicle i'-4' in length, dense and spike-like, the branches ¥ in length, ascending; spikelets crowded; outer scales about 1" long, obtuse, slightly bifid, scabrous, bearing a more or less bent awn 2"-$" long; third scale much shorter, erose-truncate, hyaline, bearing a delicate awn about i" long, inserted below the apex. In waste places, Maine to Georgia, and in Texas, mostly near the coast. Very abundant in western North America, from British Columbia to Mexico. Naturalized from Europe. Native also of Asia. July-Sept. 42. ARCTAGROSTIS Griseb. in Ledeb. Fl. Ross. 4: 434. 1853. Perennial grasses with flat leaves and contrac
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
