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 ; fls. smooth ; Imoer falea awned. — 

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



2. E. Canadensis. (E. glaucifolius. W'tUd!) 



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

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

 at the summit ; rachis hairv ; spikekts 2 — 5-flowered ; glumes 5— 7- veined, short- 

 awned, hairy; lower palea' hairy, awned.— TJ. A tall, showy grass, with long, 

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



3. E. vii.LOSus. Muhl. Eye Grass. 



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

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

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

 glumes linear; lower palea with a long, straight awn.— "il- 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; rachis 

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

 flowered ; glumes 0, rarely 1 or 2 ; fls. smoothish ; lo-wer palea terminating in a 

 very long awn. — %. 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 slieatlis 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; awns 3 or 4 times as 

 long as the paleee.— 4]- Mass., Bigetow, to Peun., W. to Ohio, rare. A small 

 and slender .species. July. 



Tribe 10. ANDROPOGONE^.— 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. 

 56. ANDROPOGON. 



Gr. avSpoi, of a man, n-coywv, 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 

 awned. 



1. A. FURclTcs. Muhl. Forked Spike. 



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

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

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

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

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



2. A. SC0P.4.RIUS. Michs. (A. purpurascens. Miihl.) Broom Grass. 



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

 fasciculate, erect; to. lance-linear, somewhat hairy and glaucous ; 5^ite sim- 

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

 spikelets remote, abortive one neuter, mostly with 2 paleae, awned.— 7|. Woods, 

 U. S. Aug. 



3. A. VlRGINlCUS. 



Cffispitose ; st. subcompressed, 3f high, branches few and short, halt 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 spikelet a mere pedicel, without paleae ; monan- 

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



