North American Cyperacece. 4S1 
C. Gatesii, p. 25-5. Middle Florida, Dr. Chapman! ; 
Wilmington, North Carolina, Mr. Curtis ! I have also what 
appears to be the same plant collected near New Orleans, by 
the late JNIr. Drummond, and numbered 3SS. 
After C. occidentalism p. 259, insert the two following new 
species : 
Cyperus cephalanthus, Terr. ^'Hook. 
Culm tall, triquetrous, umbel somewhat simple ; rays 3 — 4, 
somewhat erect ; involucre 2 — 3-leaved ; one of the leaves 
very long, the other about the length of the umbel ; spikes 
ovate, capitate, with short setaceous involucels ; spikelets 50 
— 80 in each head, linear, about 10-flowered ; the lowest ones 
fasciculate ; scales lanceolate, remote, pointless, 7-nerved ; 
interior scales narrow, scarious, minute ; nut obovate-oblong, 
with a short abrupt point. 
Culm 4 feet high, concave on the sides ; the angles scabrous and very 
acute. Leaves 2 lines wide. flat. Umbel rather small for the size of 
the plant; rays 2 — 3 inches long. Odirete 2-av,-ned. Sj)ikes or heads 
an inch and a half in length, and an inch in diameter, of an ovate form, 
with one or two setaceous bracts at the base ; the spikelets inserted on 
all sides of a common rachis. Spikelets half an inch long ; the florets 
quite distinct. Scales rather acute, ferruginous, Avith a pale green keel ; 
the sides strongly nerved. Interior scales narrow-lanceolate, adnate. 
Stamens 3. Nut brownish, dull, two-thirds the length of the keel. 
Hab. Texas, T. Drummond. (Coll. III. no. 445.) 
Obs. The spikelets in this very distinct species are some- 
what capitate ; but they are inserted on an elongated common 
axis, and not aggregated at the summit of the rays, as in C. 
filiculmis and its allies. 
Cyperus uxiflorus, Torr. ^ Hook. 
Culm filiform, triangular, smooth, leaves very narrow ; um- 
bel simple, 4 — 5-rayed, erect ; involucre 3-leaved ; the leaves 
Vol. III. 55 
