. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. GEAMINEAE (GRASS FAMILY) 167 187. A. biflorum. Splkelet x3. high; leaves often lax, 2-5 mm. wide; spike dense, 5-10 cm. long, usually tinged with purple ; glumes conspicuously 5-7- iierved, the margins thin and widened above the middle, rather abruptly narrowed into a short awn ; lemma 8-10 mm. long, glabrous or nearly so, terminating in an awn shorter than itself. (.4. violaceuin Lange.) — Alpine regions of the Wliite Mts., L. Superior, northw.
. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. GEAMINEAE (GRASS FAMILY) 167 187. A. biflorum. Splkelet x3. high; leaves often lax, 2-5 mm. wide; spike dense, 5-10 cm. long, usually tinged with purple ; glumes conspicuously 5-7- iierved, the margins thin and widened above the middle, rather abruptly narrowed into a short awn ; lemma 8-10 mm. long, glabrous or nearly so, terminating in an awn shorter than itself. (.4. violaceuin Lange.) — Alpine regions of the Wliite Mts., L. Superior, northw. and westw. June-Sept. (Eu.) Fig. 187. 6. A. tfinerum Vasey. Culms erect, 5-10 dm. high, rigid ; leaves subrigid, narrow, flat or invo- lute in drying; spike usually almost cylindrical, green or straw-color, dm. long; glumes firm, nearly as long as the spikelet, the scarious margin narrow, tapering more gradually into the awned point ; lemma short-awned. — Nfd. to Pa. and Minn., and common in the far West. July, Aug.—The typical form has slender spikes with rather distant spikelets, which are nearly inclosed in the glumes; this is common westw. and extends into Minn. ; also introduced on the coast of Mass. {Eaton.) Fig. 188. Passing into a form with stouter and denser spikes and broader less rigid leaves which extends eastw. to Nfd. and N. E.; this is A. novae-angliae Scribn. and essen- tially A. pseudorepens Scribn. & J. G. Sm. 7. A. caninum (L.) Beauv. (Awnkd Wheat ) Culms erect, 3-10 dm. high; leaves flat, rather lax, 8-20 cm. long, 2-6 mm. wide, scabrous ; spike more or less nodding, at least in fruit, rather dense, 7-15 cm. long; spikelets cm. long exclud- ing the awns; glumes pointed or awned; lemmas 3-5-nerved ; awns straight or somewhat spreading, fully twice the length of the lemma. — Sparingly naturalized in cultivated grounds and meadows; indigenous along our nortnern borders, and westw. July-Sept. (Eu.) Fig. 189. 8. A. Richardsbnii S
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