ikNDROPOGON. CLXI. GRAMINE^. 621 



lets in pairs about 3-flowered. ; gimnes both in front, lance-linear, slightly con- 

 nate at base, produced into a scabrous awn ; fls. smooth ; loiver falca awned. — 

 n\ Banks of streams, N. Eng. to 111., S. to Va. Aug. 



2. E. Canadejjsis. (E. glaucifolius. Willd.) 



St. erect, .smooth, stout, 3— 5f high; Ivs. lance-linear, flat, smooth, dark 

 green or often glaucous; spike rather spreading, 4 — 8' long, generally nodding 

 at the summit; rachis hairy; spikdets 2— 5-flowered^ glwmes 5— 7-veined, short- 

 awned, hairy; lower falca hairy, awned. — Tj. A tall, showy grass, with long, 

 recurved, waving spikes. RiveV banks, &c., Free States and Brit. Am. Aug. 



3. E. viLLCsus. Muhl. Rxje Grass. 



St. slender, striate, smooth,'^ — 3f high ; Ivs. rough-edged, pubescent above, 

 J-' broad; sheaths hairy, especially the lower ones; spike 2i— -3i' long, a little 

 nodding and spreading; rachis a.n& flowers hispid, pilose ; spikeleis 1 — 3-flowered; 

 glumes linear; lower palca with a long, straight awn. — Tj. Dry grounds, Free 

 States. July. 



4. E. HysTRix. Hedgehog Grass. 



St. round, smooth, 2-— 4f high ; Ivs. lance-linear, carinate, scabrous, gene- 

 rally glaucous and with the sheaths striate; spike 4 — 6' long, erect; reikis 

 nearly smooth, fiexuous ; spikelets remote, diverging, almost horizontal, 2 — 3- 

 dowered ; glumes 0, rarely 1 or 2 ; fls. smoothish ; Imoer palea terminating in a 

 very long av/n. — % An odd-looking grass, in moist woods, Free States, common. 

 July. 



5. E. STRiATUs. Willd. Striated Lime Grass. 



St. slender, erect, 8 — 12' high ; Ivs. and sheaths smooth, the former lance- 

 linear, acuminate, scabrous on the upper siuiace; spike erect, 2 — 3' long; invol. 

 4-leaved, strongly veined, 2-flowered, one flower commonly abortive ; spikelets 

 in pairs, somewhat spreading, hispid, each 2-flowered ; amns 3 or 4 times as 

 long as the palees. — % Mass., Bigelow, to Peun., W. to Ohio, rare. A small 

 and slender species. July. 



Tribe 10. A5f DROPOGONEJE, — Inflorescence panicled or spiked. Spike- 

 lets generally in pairs, one sessile and perfect, the other mostly pedicellata 

 and imperfect. Glumes of stouter texture than the paleas. Paleas delicata 

 and membranaceous, the lower commonly awned. 

 56. ANDROPOOON. 



Gr. avSpoi, of a man, TTOiyoiv, beard; in allusion to the hairy flowers. 



Spikelets in pairs, polygamous, the lower one incomplete, on a plu- 

 mosely bearded pedicel, upper one 1 -flowered, perfect ; glumes sub' 

 coriaceous, awnless ; paleae shorter than the glumes, one generally 



1. A. FURCATUs. Muhl. Forked Spike. 



SI. semiterete above, 4 — 7f high; Ivs. lance-linear, rough-edged, radical 

 ones very long; spikes digitate or fasciculate, in 2s — 5s, 3 — 5' long, purplej 

 spikttets appressed, abortive one on a plumose pedicel, (^ with 2 palese, awnloss, 

 perfect one with 2 unequal glumes ; lo2'jer palea bifid, awned between the divi- 

 sions. — % Meadows and low grounds, Free States and Can. Aug. 



2. A. scoPARins. Michx. (A. purpurascens. Muhl.') Broom Grass. 



St. slender, paniculate, 3f high, branched, one side furrowed, branches 

 fasciculate, erect; to. lance-linear, somewhat hairy and glaucous; sy;«to sim- 

 ple, lateral and terminal, on long peduncles, 2 — 3 from each sheath, purplej 

 spikelets remote, abortive one neuter, mostly v.dth 2 paleas, avsoied. - %. Woods, 

 U.S. Aug. 



3. A. VlRGINlCUS. 



CsEspitose ; St. subcompressed, 3f high, branches few and short, half con- 

 cealed; Ivs. linear, lower ones a foot or more long, rough-edged and hairy; 

 sheaths smooth; spikes short, in slender, half concealed fascicles of 2 or 3, late- 

 ral and terminal ; abortive spikclet a mere pedicel, without pales ; § monan- 

 drous, with a straight awn. — % Swamps, meadows, &c., N. Eng. to Ky. Sept, 



