S74 North American Cyijeracece. 
about 8-flowered ; rachis laterally compressed, straight, winged; 
scales cuspidate, squarrose at the tip, strongly nerved ; stamen 
1 ; nut obovate, triquetrous. 
C. inflexus, Mnhl. ! gram. p. 16 ; Torr. ! fi. 1. p. 59 ; Bigd. fl. Bosi, 
ed. 2. p. IS; Beck! Bot. p. 421 ; Gray! Gram. Sf Cyp. part 1. no. 68 ; 
Darlingt. fl. Cest. ed. 2. p. 16; Link, jahrb. 3. p. 88. (fide Schiilt.) 
C. uncinatus, Pursli, fl. 1. p. 50, (not of Poiret.) 
C. Purshii, Rcem. Sf Schult, syst. 2. p. 177. 
C. pygmasus, Nutt. in Amer. Phil. Trans. N. Ser. 5. p. 142, (not of 
Cavan. or RoUb.) 
Root fibrous, biennial ? Culms cespitose, 2 — 3 inches high, leafy at 
the base. Leaves linear, flat, equalling the culm. Umbel often sessile, 
the inflorescence then consisting of aggregated heads of spikelets ; but 
more commonly there are 2 or 3 short rays. Involucre many times longer 
than the umbel. Sjnkelets in heads of 8 — 16 or more. Scales oblong, 
gradually attenuated into a remarkably squarrose or recurved point, of a 
greenish colour, not scarious on the margin. Stamen always solitary'. 
Style 3-parted. Nut gray, triangular, with the sides a little convex. 
Hab. Banks of rivers from latitude 52" N, to North Ca- 
rolina. Lake Winnipeg, Dr. Richardson! ; Lower Canada, 
Mr ^Benedict!; banks of the Otter Creek, Vermont, Dr. James; 
on the Connecticut river, in many places, Prof. HitchcocJc 
and Dr. Cooley ! ; near Albany, Mr. Tracy and Mr. H. H. 
Eaton ! ; Cambridge, New York, Dr. Stevenson ! on Lake 
Chainplain, Fursh; Pennsylvania, Mnhlenherg!; Salem, North 
Carolina, Schueinitz ; Lincolnton, in the same state, Mr. 
Curtis I ; Kentucky, Dr. Short !; Arkansas, Dr. Pitcher and 
Mr. Nuttall ! ; upper part of the Platte, Dr. James ! 
Oes. This species has a wider range than almost any other 
of the genus in North America. When dried, it exhales a 
powerful odour, scarcely to be distinguished from that of 
Trifolium coeruleum. It is nearly related to C. aristatns, Pottb. 
and several other species wilJi subaristate squarrose scales, but 
it differs from all tlic Cyperi of this section in my herbarium, 
in its much more cespitose habit, fewer-flowered spikelets, at- 
tenuated scales and straight laterally compressed rachis. 
