North American Cyperacaoe. JJ95 



S. CH.ETOCYPERUS, N. ab Esenh. 



Spike compressed, few-flowered ; the scales somewhat dis- 

 tichously imbricated. Perigynium of 3 — 6 cartilaginous 

 retrorsely-hispid bristles. Stamens S. Style 3-cleft; the 

 base bulbous and articulated to the ovary, persistent. Nut 

 triangular, crowned with the bulb of the style. Culm slender, 

 often procumbent; spikes terminal, solitary, often proliferous. 



Chaetocyperus, N. ah Eseiih. hi Wight's contrih. pp. 70 and 

 95, ^' hi Lhuicea, 9, p. 2S9. 



Species of Scirpus, Vahl, Kinith, 6f Lam: 



Species of Eleocharis, Rcem. SfSckult. 



Species of Cyperus, Rctz., Willdi 



ClI^TOCYPERUS BaLDWII^II. 



Spikes ovate, much compressed, proliferous and rooting at 

 the base ; scales lanceolate-linear, somewhat obtuse, loose ; 

 nut smooth, with prominent angles ; bristles 3 — 4, half the 

 lenoth of the nut. 



o 



Scirpus sarnientosus, Baldic. MS. S^' herb ! 



ivoo< fibrous, annual. Culms 5 — 6 inches long, cespitose, of the thick- 

 ness of a strong bristle, subterete, sulcata, prostrate and rooting at the 

 extremit}-. Spikes 3 — 8-flowered, manifestly distichous, about one third 

 of an inch long. Scales somewhat spreading, smooth, slightly keeled. 

 Stamens 3; filaments long and slender; anthers oblong. Ovary linear- 

 oblong. Bristles scarcely half the length of the hut, and appressed to 

 its sides. Style deeply 3-parted ; segments glandularly pubescent. Nut 

 oblong, much smaller than the scale, shining, distinctly triangular, with 

 the angles prominent and somewhat margined. 7'i(6crc/e small, white, 

 set close on the summit of the nut, the base spreading out into three 

 lobes which correspond with the angles of the nut ; the apex pointed with 

 a short beak. 



Hab. Low wet places. Near St. Mary's, Georgia, Dr. 

 Baldwm ! — Flowers from July to September. 



Obs. This interesting plant is nearly allied to C. setacetts^ 

 N. ab E. in LinntBa, 9. p. "289, (C. Limnocharis in WighC* 



Vol. IU. 38 



