10 TRIANDRIA MOXOGYNIA 1 



- Culm 15 inches to 2 feet hish, slender, compressed-triquetrous, nearly smooth, 

 or slightly scabrous at summit, leafy. Leaves lance-linear, rathor narrow, flat, 

 striate, scabrous on the margin* nearly a6 lone as the culm. Statninate spikelct 

 an inch or more in length, often enlarging towards the summit, and sometimes 

 bearing pistillate florets; glumes oblong, loosely Imbricate, acute or mucronate, 

 keeled. Pistillate spikelets generally 3, (sometimes 2, and even 1,) somewhat ap- 

 proximate, cylindrical, slender and rather loose-flowered, nodding, peduncles fili- 

 form, upper ones short, lower ones longer; glumes shorter than the fruit, ovate, 

 oval and obovate, obtuse or emarginate, mucronate. Fruit ovoid-lanceolate, tri- 

 quetrous, without nerves on the sidos, smooth, tapering to a short beak which is 

 ontire, spreading or somowhat recurved at matunry. Seed triquetrous, mucronate, 

 minutely punctieulatc. 



flab. Moist meadows, and low grounds : frequent. Fl. I\Tay. Fr. Ju!y. 



Obs. I have specimens, pron-ninctd by Pr -f. Torrey to be of this species, which 

 constitute a pretty distinct variety, if" not Specifically distinct. The Sfamtnafe 

 glumes are oblong and quite obtuse, or rounded at the end : the pistillate glumes 

 are narrow, linear oblong, and rather obtuse, with green keel and dark brown 

 sides; Fruit somewhat triquetrous, or rather plano-convex and keeled on ihe back, 

 with the beak squarrosely spreading, or recurved. In other respects this plant 

 agrees pretty well with C. miliacea. Hub. E. Darlington's meadow. 



32. C % nYSTLTuciTVA, 1VHUL Staminate spikelct pedunculate, bracte- 

 ate; pistillate spikelets ubout 3, somowhat distant, cylindric-oblong, 

 dense-fruited, nodding, the upper one on a short peduncle, the others 

 on slender exsert peduncles ; fruit ovoid, inflated, long-beaked, some- 

 what horizontal, twice as long as the oblong emarginate awned glume. 

 Becky Bot. p. 441. Spkciht, Gray, Gram % 2. no. 188. 

 Poucupine-likb Caret. 



Culm 18 inches to 2 feet hlghj triquetrous, scabrous above, leafy. Leaves linen r- 

 lanceolate, scabrous; the upper ones, or brarts % surpassing the culm, with 

 short sheaths. Statninate spikelet on a peduncle 1 to 2 or 8 inches lomy, with a 

 subulate-linear bract at base ; glumes laMce-oblong, mucronate, pale brown, with 

 a green keel. Pistillate spikelets 2 to 4, generally 3, rather distant, an inch or inch 

 and half lone, cylindric, nodding, the upj>er one nearly sessile, the others pedun- 

 culate, the lowest on a slender exsert peduncle 2to4 Inches long ; glumes scarcely 

 half as long as the fruit, oblong, emarcr!nat6 f ending in a scabrous awn. Fruit 

 ovoid-oblong, obscurely triangular, glabrous, nerved or striate, terminated by a 

 Inner, rather slender beak, bifid at apex, finally spreading almost horizontally. 

 Seed triquetr us, striately puncticulate, appearing somewhat scabrous, (angles 

 smooth, Si.-hw. <j* Torr.) terminated by the long, flexuose, cartilaginous, persistent 

 style. 



Tlab. Wet meadows: W. Chester, Downingtown: frequent. Fl. May. .FV. July. 



Obs. This species grows with C. tentamlata, and greatly resembles it ; but the 

 pedunculate, nodding spikelets, at once serve to distinguish it. 



b. Staminate spikelets tivo or more, j- Stigmas 2. 



33. C. ciuNiTA, Lam. Staminate spikelets mostly two, long and slen- 

 der, eernuous, sometimes androgynous ; pistillate spikelets about 4, 

 somewhat distant, long, cylindric, dense-flowered, pendulous, often 

 staminate at the end ; fruit ovoid, subtriquetrous, ventricose, short-beak- 

 ed, smooth, about half or one third as long as the lance-linear ciliate- 



