356 Monograph of North American Cances. 



C. Pseudo-cyperus, Willd. sp. pi. iv. p. 295. Schk. car. t. 



Mm. f. 102. Pursh Jl. i. p. 44. Muhl. gram. p. 253. 



Dewey car. 1. c. viii. p. 71. 

 C. furcata, Elliott sic. ii. p. 552. 



Culm 2 — 3 feet high, acutely triquetrous, thick, very scabrous on the an- 

 gles. Leaves longer than the culm, 3 lines broad, rough and coarse. 

 Sterile spike on a short peduncle, about an inch and a half in length, 

 thick; glumes loosely imbricate, long-lanceolate, mucronate, pale 



, brown. Fertile spikes usually 4, often two inches or more in length, 

 densely fruited, the 2 uppermost closely approximate, and appearing 

 geminate ; peduncles recurved, scabrous, the lowest exserted about an 

 inch, all of them supported by very long foliaceous bracteae, resembling 

 the leaves ; glumes lanceolate, cuspidate, about two thirds as long as the 

 fruit. Fruit retrorsely imbricate, prominently striate, deeply bifid at 

 the summit, the divisions forked, and almost reflexed. 



Hab. In deep swamps j Canada to Georgia ; not uncom- 

 mon. Flowers in June. 



Obs. Our plant resembles in all respects the European 

 C. Pseudo-cyperus. 



94. Carex glaucescens, Elliott. ? 



C. spicis fertilibus 3 — 4, cylindricis, pedunculatis, demum 

 pendulis ; fructibus brevi-ovatis, basi ventricosis, trique- 

 tris, glaucis brevi-rostratis, ore bifido, gluma emarginata 

 mucronata subaequantibus ; foliis glaucis. 



C. glaucescens, Elliott sic. ii. p. 553. ? 



C. sempervirens, Schw. an. tab. 1. c. 



Culm leafy below, with numerous annotinous shoots, forming large dense 

 tufts three feet high, triquetrous, angles sharp and scabrous. Leaves a 

 little shorter than the culm, canaliculate, narrow in proportion, glaucous. 

 Sterile spike on a rigid, but very long peduncle, of a remarkably trigo- 

 nous form ; glumes oblong-ovate, brown, with a long scabrous ciliate 

 midrib produced into a point. Fertile spikes 3j — 4, appearing axillary 

 in the foliaceous bracterc, but not sheathed by them, on filiform but 

 rather rigid peduncles, an inch or more in length, cylindrical and pretty 

 <hick ; raehis straight ; glumes ovate, emarginate, with a scabrous point, 

 about as long as the fruit. Fruit short-ovate, ventricose at the base, 



