North Aincncan Cyperacea. 441 



lowed N. ab P^senbeck in adopting the names employed by the 

 illustrious English botanist. 



FuiRENA SQUAEROSA, /3. p. 291 ; Curlis ! in cat. pi. Wil- 

 mingt. p. 139. 



F. sciRPOiDEA, p. 293. Apalachicola, Dr. Chapman! 



Eleocharis EQUiSETOiDES, p. 296 ; add Scirjms ohtusus, 

 Spreng. sijst. 1. p. 204, (not of Willd.) 



E. OBTUSA, p. 302. New Orleans, T. Drummojid ! (no. 

 405. and also no. 408.) 



E. SIMPLEX, p. 306. The specimens numbered 410 of 

 Drummond's New Orleans collection seem to belonfi: to this 

 species; but they are too young to be determined satisfactorily. 



E. TENUIS, p. 309. Mr. Arnott, in a very recent letter, in- 

 forms me that the printer of Nees' Cyperaceae, made a mistake 

 respecting Scirpidium tome. According to the Mst. the syno- 

 nym ought to be, " S. tenuis, Muhl. ex parte, nee S. tenuis, 

 Willd. et Link." It is also " S. tenuis, herb. Endlich. e Con- 

 necticut." The specimens which Nees examined are immature, 

 and he remarks of the species " Fructus deest. Specimena non 

 sufficient." So that his plant may still be identical with his 

 Eleocharis tenuis. Nees was probably led into error by 

 Muhlenberg's inaccurate description of this species. 



E. MELANOCARPA, p. 311. I havc received specimens of 

 this rare species from Mr. Croom, who collected them no a 

 journey from Middle Florida to Georgia. On carefully ex- 

 amining the style, I find that it is two-cleft, and remarkably 

 hairy, particularly about the bifurcation. The culm is rather 

 striate than sulcate, and the nut is blackish when mature. The 

 spikes are somewhat acute in many of Mr. Groom's specimens. 



E. PYGM^A, p. 313. /3. ? anachcBta ; nut without bristles 

 at the base. 



Vol. ITT. 56 



