334 MONOECIA.— TRIANDRIA. 



compressed, triquetrous ; margin ciliate-serrate 

 apex recurved and bicuspidate. 

 HAB. Marshes. May. U. Culm 8—12 in. high ; 

 spik. subapprox.. oblong. 



B. Inflorescence monoecious. 

 * All the spikes androgynous. 

 t Spike solitary. 

 a. Summit staminiferous. 



?. C. Fraseri : spike simple, ovate; fruit ovate-sub- 

 globose, entire at the point, longer than the oblong 

 glume ; leaves lanceolate, undulate, crenulate ; 

 scape sheathed at the base. 

 HAB. Mountains. April. 1J. . Leav. broad, radi- 

 cal. 



3. C. Willdenovii : spike simple, ovate; sterile and 



fertile flowers about 6 ; fruit ovate, subglobose at 

 the base, rostrate ; glumes ovate, acuminate, the 

 inferior ones very long and foliaceous, much ex- 

 ceeding the culm. 

 HAB. Rocky woods. May— June. U. Culm a 

 span high ; inf. glum. 1 — 2 in. long. 



4. C. polytrichoides : spike simple ; fruit oblong-lan- 



ceolate, compressed triquetrous, obtuse, emar- 

 ginate ; glumes oblong-obtuse, mucronate. 

 HAB. Dry hills and bogs. May. U. Culm a 

 foot high, very slend. ; leav. narrow -linear. 



5. C. pauciflora : spike about 4 -flowered ; sterile 



flower subsolitary, terminal ; fruit lanceolate, 

 terete, reflexed ; fertile glumes caducous. 

 HAB. Sphagnous bogs. June. i|. . A span high ; 

 fr. long., yell., caduc. 



b. Summit pistilliferous. 



6. C.squarrosa: spike mostly simple, (sometimes 



spikes 2 — 3,) very thick, oblong-cylindrical ; 

 fruit imbricate, at length horizontal, smooth, sub- 

 squarrose, bidentate at the point, longer than the 

 lanceolate glume. 

 HAB. Bogs. June. 1J.. Culm 2 ft. high'; spikr 

 i in, !on%, h in. thick. 



