North American Cyperacece. 389 
11. C ROSEA, Schkuhr, car. 2k p. 15. f. 179. 
/3. retrojiexa. 
C. relroflexa, Muhl. in Willd. sj). 4. p. 235 ; Schukhr, car. f. 140. 
.'' 7. Texensis. 
Hab. a and /3, Throughout the United States and British 
America ! 7. Texas, T. Drummond ! 
12. C CEPHALOPHORA, MuM. in Willd. sjp. 4. p. 220; 
SchJcuhr, car. f. 133. 
.'' /3. Spikes 4 — 8, aggregated into an oblong or cylindrical 
head ; scales muticous. 
C. muricata /?. cephaloidea, Dewey ! car. I. c. 11. p. 308. 
Hab. Northern and Middle States ! /3. abounds in New 
York and Massachussets ! — The plant here placed with some 
hesitation as a variety of C. cepTialophora, is apparently inter- 
mediate between that species and C. sparganioidcs, and is per- 
haps a distinct species. It certainly is not C. muricata. 
13. C. MURICATA, Linn., SchJcuhr, car. f. 22 ; Willd, 
sp. 4. p. 234. 
C. HookeriEina, Dewey! car. I. c. 29. p. 248. 
Hab. Near Boston, B. D. Greene, Esq.! ; Carlton House, 
Dr. Richardson ■' — This species is by no means common in 
North America, although C. muricata, jS. cephaloidea (here 
referred to C. cephalophora) is abundant in the Northern States. 
C. divulsa, Good, seems, as remarked by Wahlenberg and 
Hooker, to be a mere variety of the present species, differing 
in having its spikelets more remote. C. Hookeriana, Dewey, 
although a more slender plant, seems not to be a distinct 
species. 
14. C. sPARGANioiDES, Muhl. in Willd. sp. 4. p. 237 ; 
Schkuhr, car. f. 142. 
C Boscii, Spreng. syst. 3. p. 812. 
