Andropogon. CLXI. GRAMINEiE. 621 



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

 nate at base, produced into a scabrous awn ; Jls. smooth ; lower pcdea awned. — 

 % Banks of streams, N. Eng. to III, S. to Va. Aug. 



2. E. Canadensis. (E. glaucifolius. WiUd.) 



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 ; spikclcts 2— 5-flowered ; glumes 5 — 7-veined, short- 

 awned. haiiy ; lower palea hair}^, awned. — Tj. A tall, showy grass, with long, 

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



3. E. viLLOsus. Muhl. Rye Grass. 



St. slender, striate, smooth, 2 — 3f high ; Ivs. rough-edged, pubescent above, 

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

 nodding and spreading; rachis and Jlowers hispid, pilose ; spikelets 1 — 3-flowered ; 

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

 States. July. 



4. E. HvsTRix. 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 ; rachis 

 nearly smooth, flexuous ; sjrikclets remote, diverging, almost horizontal, 2 — 3- 

 flowered ; glumes 0, rarely 1 or 2 ; Jls. smoothish ; Imoer palea terminating in a 

 very long awn. — 1\ An odd-looking grass, in moist woods. Free States, common. 

 July. 



5. E. STRIATUS. Willd. Striated Lime Grass. 



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

 linear, acuminate, scabrous on the upper surface; 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 ; aions 3 or 4 times as 

 long as the paleae. — % Mass., Bigeloiv, to Penn., W. to Ohio, rare. A small 

 and slender species. July. 



Tribe 10. ANDROPOGOXEtE— Inflorescence panicled or spiked. Spike- 

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

 and imperfect. Glumes of stouter texture than the paleae. Paleae delicate 

 and membranaceous, the lower commonly awned. 

 5G. ANDROPOGON. 



Gr. avSpos, of a man, ncjyoiv, beard; in allusion to the hairy flowera. 



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 

 awned. 



1. A. FURCATi-.s. Muhl. Forked Spike. 



(S/. semi terete above, 4 — 7f high; Ivs. lance-linear, rough-edged, radical 

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

 spikelets appressed, abortive one on a plumose pedicel, J^ with 2 paleae, awnless, 

 perfect one with 2 unequal glumes ; lover patea bifid, awned between the divi- 

 isions. — % Meadows and low grounds. Free States and Can. Aug. 



2. A. SCOPARIU.S. Michx. (A. purpurascens. Muhl.) Broom Grass. 



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

 fasciculate, erect; Ivs. lance-linear, somewhat hairy and glaucous; spikes sim- 

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

 spikelets remote, abortive one neuter, mostly with 2 paleae, awned. — % Woods, 

 U.S. Aug. 



3. A. ViRoivIcr.s. 



Csespitose ; .st. subrompres.sed, 3f high, branches few and short, half con- 

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

 sheaihs smooth ; .ynkfs short, in slender, half concealed fascicles of 2 or 3, late- 

 ral and terminal ; ohortive spikdH a mere pedicel, without paleap' ; ^ monan- 

 drous, with a siraii^'hl awn.— ?| Swamps, meadows, &c., N. Km;, to Ky. Sept. 



