GKAMINE^. (grass FAMILY.) 637 



1. E. saccharoides, Miclix. (IM. u, fig. 1,2.) Culm (4-G° high) 

 woolly-beank'd at the joints; panicle contracted ; the silk ;i hairs long r than the 

 spikelets, shorter than the awn ; stamens 2. (E. alopecuroides, Kll.) — Wet 

 piiic-barrciip, from N. J. and 111. southward ; rare. tSept., Oct. 



2. E. brevib^rbis, Miilix. Culm (2 - 5° high), somewhat beardod at the 

 nii])or joints; jtanicle rather open; silky hairs shorter than the spikelets. — 

 L(»w grounds, Va., and southward. 



14. ANDROPOQON, IJoyen. Beard-Grass. (Tl. 14.) 



Sj)ikflets in pairs ujion each joint of the slender rhachis, spiked or racemed, 

 one of them pedicelled and sterile (staminate, pistillate or neutral), often a 

 mere vestige, the other sessile, 1-flowered and fertile; lower glume the larger, 

 coriaceous and nerved, blunt, the second carinate and acute, the 2 upper hya- 

 line, the dowering glume awned from the tip. Stamens 1 -3. Grain free. — 

 Coarse, mostly rigid perennials, mostly in sterile or sandy soil ; with lateral 

 or terminal spikes commonly clustered or digitate ; the rhachis hairy or plu- 

 mose-bearded, and often the sterile or staminate flowers also (whence the 

 name, composed of avi)p, man, and iruyuv, beard). 

 * Spikes digitate, thickish, short-bearded , the sterile spikelet staminate ; stamens 3. 



1. A. furcatUS, Muhl. (PI. U, fig. 1-3.) Tall, 3-4° high, rigid, the 

 naked summit of the culm (and usually some lateral branches) terminated by 

 2-5 rigid spikes; spikelets approximate, appressed ; hairs at the base of the 

 fertile spikelet, on the rhachis and on the stout pedicel of the awnless stami- 

 nate spikelet short and rather sparse ; awn of fertile Hower long and bent; 

 leaves flat, roughish, the lower ones long. ("A. proviucialis, Lam.") — Com- 

 mon in dry sterile soil. Aug. - Oct. 



* * Spikes with slender often zigzag rhachis, silky -villous, 

 ■«- Single and scattered along the branches, with the silky hairs shorter than the 

 Jlowers ; sterile spikelet conspicuous but mostly neutral; the fertile triandrous. 



2. A. scop^rius, Michx. Culms slender (1 -3° high), with numerous 

 paniculate branches; lower sheaths and narrow leaves hairy; spikes slender, 

 scattered, mostly peduncled (1-2' long), very loose, often purplish, silky with 

 lax dull-white hairs ; sterile spikelet awn-pointed or awnless ; the fertile about 

 half the length of its twisted or bent awn. — Dry ground. July -Sept. 



3. A. maritimus, Chapm. Smooth and glaucous ; culms ascending 

 from creeping rootstocks, 1 - H*^ high; leaves rather rigid, divaricate, their 

 compressed sheaths imbricated ; panicle short ; peduncles included within 

 the conspicuous bracts ; rhacliis and ])edicels cojnously ciliate with spreading 

 hairs; glumes larger, 3-4" long. — Sandy sea-coast; Cape May, and south 

 to Fla. 



-^ -t- /n pairs or clustered ; the copious soft-silky hairs much longer than the flow- 

 ers ; sterile spikelet a small neutral rudiment (in n. 4 and .')), or altogether 

 wanting on the very plumose-hairy pedicel ; fertile flower munandrous, its 

 awn capillary ; leaves narrow, the lower or their sheaths often rather hairy. 



4. A. arg^nteus, Ell. Smooth; culms rather slender (1-3° high); 

 spikes ill pairs (rarely in fours) on short mostly exserted and loosely panicn- 



