North A)neric(m CijyrracccE. 411 
92. C. Emmonsii, DeiL-ey ! in litt. 
C. alpestris. Schw. Sj- Torr. ! car. I. c. p. 341, not of Allioni, 
C. Davisii, Dewey! car. I. c. 10. p. 279, & 11. t. H. f. 25. (bad), not 
of Schic. Sf Torr. 
Hab. iMassachussetts ! — Certainly very different from the 
European C. alpestris. The so-called radical peduncles some- 
times observed in this species, are culms bearing a small 
staminate, and one or two few-flowered pistillate spikes, all 
aggregated at the summit so as readily to be mistaken for a 
single spike. The same thing is observed in C. Floridana ^ 
C. nio-romaro-inata. 
Another species having been previously dedicated to Mr. 
Davis, it becomes necessary to provide a new appellation for 
this plant ; and we cheerfully accord with the wishes of Prof. 
Dewey, that it should bear the name of Prof Emmons of 
A\ illiams' College, a zealous and successful cultivator of na- 
tural history. 
93. C. Nov^ AxGLiiE, Schw. anal. tab. I. c. ; Deivey! car. 
I. c. 11. p. 314. t. 7. 
C, collecta, Dewey ! car. I. c. 11. p. 314, t. 7. f. 44. 
Hab. Massachusetts, Deicey ! — This species has been 
thought to have but 2 stigmas, but by careful management we 
have no difficulty in finding 3 in our specimens ; and the nut, 
moreover, is constantly triangular. We therefore place the 
plant along with the closely allied species, C. Pennsylvaiiica, 
and Emmonsii. We perceive no essential difference between 
this species and C. collecta, Dewey. 
94. C. Floridaxa, Schw..' anal. tab. I. c. ; Schw.! Sf 
Torr.! car. I. c. p. 306 (very badly described), t. 28. f. 1. 
C. albicans, Spreng. syst. 3. p. 818 ? 
Hab. Florida, Le Conte! and Dr. Chapman! ; Louisiana, 
Dr. Ingalls ! — This species has no resemblance whatever to 
