OP ARTS AND SCIENCES. 135 



* * Beak twice or more the length of the body of the perigyniiim. 



233. Carex stipata, Muhl. ; Willd. Sp. PL iv. 233. 

 G. vulpinoidea, Torr. Monogr. 390. 



C. stipata, var. maxima, Chapm. F'lora. 

 Florida to Newfoundland, La Pylaie, and British America, Oregon, 

 Hall, Henderson, California, Sierra Valley, Lemmon, and New Mexico, 

 Fendler. 



234. Carex crus-corvi, Shuttleworth ; Kunze, Riedgr. Suppl. 128, 



t. 32. 

 Forms 07-thoclados and orthostachi/s, Kunze, 1. c. 166, 167, t. 42. 

 C. siccceformis, Boott, Journ. Bost. Nat. Hist. Soc. v. 113. 

 C. Halei, Dewey, Sill. Journ. 2d ser. ii. 248. 

 Florida to Texas and Indian Territory, Butler, and northward to 

 Illinois, Wisconsin, and Red Wing, Minnesota, Sandberg. 



C. Multiflor(B, Kunth, Enum. PI. ii. 387. (Paniculatce, Kunth, 1. c. 389, Nym. 

 Consp. Fl. Eur. 781. Bracteosce, Kunth, 1. c. 378. Siccatce, Carey, Gray's 

 Man. 1848, 539, in part. Intermedia', Nym. Consp. Fl. Eur. 782. Distichce, 

 Christ, Cat. Eur. Car. 8.) Heads various, mostly loosely flowered, sometimes 

 a panicle, yellow or tawny ; spikes sliort (rarely longer than broad) ; stami- 

 nate flowers sometimes occupying whole spikes in the middle or at the apex 

 of the head ; perigynium mostly small and short and nearly nerveless, or in 

 some species becoming nearly lanceolate and more or less prominently nerved, 

 firm in texture, usually numerous. 



* Spikes conspicuously panicled. 



235. Carex decomposita, Muhl. Descr. Gram. 264. 



C. faniculaia, var. decomposita, Dewey, Sill. Journ. x. 275. 

 Florida to W. Louisiana and northward to New York, Michigan, 

 and Illinois. Not common. 



* * Spikes in a simple or nearly simple head. 



236. Carex Gayana, Desvaux, Fl. Chili, 205. 



Plant nearly or quite dioecious. The species is very little under- 

 stood. Colorado to Sonera Pass, California, Brewer 1865, and south- 

 ward. South America. 



Var. ? HYALINA. 



Differs from the species in bearing an interrupted slender head (an 

 inch long and nearly linear), the lowest spike of which is entirely 

 distinct and subtended by a conspicuous short bract, and in the very 

 thin hyaline scales which are obtuse or very shortly mucronate. The 

 perigynium is rather large, less coriaceous, not shining. Probably a 

 distinct species, but I have fragmentary specimens which appear to 

 be intermediate between this and the type of the species. Evidently 



