^orth American Cyprracece. 411 



92. C. Emmonsii, Derccy ! in litt. 



C. alpestris. Schw. S^ Torr. ! car. I. c. p. 341, not of Allioni. 

 C. Davisii, Deivey ! car. I. c. 10. p. 279, & 11. t. H. f. 25. (bad), not 

 of Schw. &f Torr. 



Hab. Massachussetts ! — Certainly very different from the 

 European C. oliicstris. 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 &f 

 Cf nigromarginata. 



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 

 Williams' College, a zealous and successful cultivator of na- 

 tural history. 



93. C. Nov^ Anglije, Seine, anal, tab. 1. c; Deioey! car. 

 J, c. 11. p. 314. t. 7. 



C. coUecta, Dewey ! car. I. c. 11. p. 314, t. 7. f. 44. 



Hab. Massachusetts, Dewey! — 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. Fennmjlvanica^ 

 and Emmonsii. We perceive no essential difference between 

 this species and C. collccta, Deivey. 



94. C. Floridana, Schw..' anal, iah. L c; Schiv. ! 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 Pr. Chaimuin! ; Louisiana, 

 J)r. Ingalls ! — This species has no resemblance whatever to 



