ANDROPOGON, CLXI. GRAMINEZ. 621 
lets in pairs about 3-flowered ; glwmes both in front, lance-linear, slightly con- 
nate at base, produced into a scabrous awn; fis. smooth; lower palea awned.— 
| Banks of streams, N. Eng. to IL, S. to Va. Aug. 
2. E. Canapensis. (E. glaucifolius. Willd.) 
St. erect, smooth, stout, 3—5f high; Jvs. lance-linear, flat, smooth, dark 
green or often glaucous; spike rather spreading, 4—8’ long, generally nodding 
at the summit; rachis hairy; spikelets 2—5-flowered; glwmes 5—7-veined, short- 
awned, hairy ; lower palea hairy, awned:—% A tall, showy grass, with: long, 
recurved, waving spikes. River banks, &c., Free States and Brit: Am. Aug. 
3. E. vittosus. Muhl. Rye Grass. 
St. slender, striate, smooth, 2—3f high ; ws. rough-edged, pubescent above, 
3’ broad; sheaths hairy, especially the lower ones; spike 2i—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.—2| Dry grounds, Free 
States. July. 
4. E. Hystrix. Hedgehog Grass. 
St. round, smooth, 2—4f high; dvs. 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; fis. smoothish ; lower palea terminating in a 
bl long awn.—2, An odd-looking grass, in moist woods, Free States, common. 
uly. 
s 5, E. striatus. Willd. Striated Lime Grass. 
St. slender, erect, 8—12/ high; Jvs. and sheaths 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 palez.—2 Mass., Bigelow, to Penn., W. to Ohio, rare. A small 
and slender species. July. 
Trize 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 palee. Palez delicate 
and membranaceous, the lower commonly awned. 
56. ANDROPOGON. 
Gr. avdpos, of aman, twywy, 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; paleze shorter than the glumes, one generally 
awned. 
1. A. FurcAtus. Muhl. Forked Spike. 
Sf. semiterete above, 4—7f high; dvs. 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, 3 with 2 palee, awnless, 
perfect one with 2 unequal glumes; lower palea bifid, awned between the divi- 
sions.—2, Meadows and low grounds, Free States and Can. Aug. 
2. A. scoparius. Michx. (A. purpurascens. MuAl.) Broom Grass. 
St. slender, paniculate, 3f high, branched, one side furrowed, branches 
fasciculate, erect; lvs. lance-linear, somewhat hairy and glaucous; spikes sim- 
ple, lateral and terminal, on long peduncles, 2—3 from each sheath, purple; 
woe remote, abortive one neuter, mostly with 2 palee, awned.—2|. Woods, 
oe we ; 
3. A. VirGINicus. 
Ceespitose ; st. subcompressed, 3f high, branches few and short, half con- 
cealed ; dvs. 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 palee; $ monan- 
drous, with a straight awn.—2_ Swamps, meadows, &c., N. Eng. to Ky. Sept. 
J 
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