. 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. 46. ARRHENATHERUM Beauv. Oat Grass Spikelets 2-flowered, the florets approximate, the lower staminate, its lemma bearing a geniculate and twisted awn on the back near the base ; the upper per- fect, its lemma short-awned from or near the apex, or awnless ; rhachilla hairy, prolonged behind the upper palea into a bristle; glumes unequal, acute, thin and scarions; lemmas of firmer texture, 5-7-nerved ; palea ciliate on the nerves.—-Tall perennials
. 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. 46. ARRHENATHERUM Beauv. Oat Grass Spikelets 2-flowered, the florets approximate, the lower staminate, its lemma bearing a geniculate and twisted awn on the back near the base ; the upper per- fect, its lemma short-awned from or near the apex, or awnless ; rhachilla hairy, prolonged behind the upper palea into a bristle; glumes unequal, acute, thin and scarions; lemmas of firmer texture, 5-7-nerved ; palea ciliate on the nerves.—-Tall perennials with flat leaves and long narrow panicles. (Name from , masculine, and aS^p, awn, in reference to the awned staminate floret.) 1. A. elXtius (L.) Beauv. (Tall 0.) Culms 1 m. or more high, erect; leaves long, linear, cm. wide, scabrous on both surfaces ; panicle pale or purplish and shining, 15-30 cm. long, narrow, the short branches verticillate, usugilly spike- let-bearing from the base; spikelets 7-8 mm. long; glumes minutely scabrous, the second about equaling the florets ; lemmas scabrous, the awn of the staminate floret about twice the length of its lemma; paleas as long as their lemmas. {A. avenaceum Beauv.)—Meadows and waste places, Nfd. to Va., Ont., Minn., etc.; often cultivated. June, July. (Nat. from Eu.) Fig. 126. A. elatius. Spikelet -with glumes detached x 2. 47. DANTHdWIA DC. Wild Oat Grass Spikelets several-flowered; florets not closely approximate, uppermost imper- fect or rudimentary; glumes subequal, much longer than the lemmas, usually exceeding the uppermost floret; lemma convex, 2-toothed or bifid at the apex, with a twisted awn between the teeth ; awn flat, formed by the extension of the 3 middle nerves of the lemma. — Tufted erect perennials with narrow leaves and small terminal panicles or racemes. (Named for Etienne Danthoine, a botanist of Marseilles.). Please note that these images are extracted from scanned page images tha
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