Monograph of North American Rhijiichospora. 197 
Obs. R. ajmosa of Elliott is described as having a terete 
culm and a smooth nut. His plant is most probably Schoc- 
nus fasclcularis of Michaux. 
2. Rhynchospora Torreyana. 
R. culmo gracili, subtereti ; foliis setaceis ; paniculis corymbo- 
sis, subsparsifloris ; spiculis ovatis, plerumque pedicellatis ; 
nuce elliptico-obovata, compressa, transversim rugosa, setis 
sursum hispidulis longiori ; tuberculo compresso-conico, basi 
latitudine nucis. 
R. micrantha, Gray, Gram, et Cyp. I. no. 96, (excl. syn.) 
Culms casspitose, 1 — 3 feet high, striate, subterete and with the leaves 
glabrous. Radical leaves 6 — 8 inches long, narrow and rigid ; cauline 
ones much shorter, setaceous. Panicles 1 — 3, corymbose, somewhat 
loosely flowered, on short peduncles. Spikelets ovate, mostly pedi- 
cellate. Glumes fuscous, ovate, mucronate. Bristles 6, hispid up- 
ward, one-half to two-thirds the length of the nut. Stamens 3. Nut 
exceeding a line in length, oblong-ovate, very evenly transversely ru- 
gose, with minute longitudinal striae. Tuherclc compressed conic, 
very broad at the base, scarcely one-third the length of the nut. 
Hab. Monmouth county, New Jersey, Torrcy ; also in wet 
ground, near Quaker Bridge, New Jersey. July — August. 
Obs. In its nut and bristles this species approaches R. rari- 
jiora, but its habit is widely different. 
3. Rhynchospora rariflora. Ell. 
R. culmis csespitosis foliisque setaceis ; paniculis slmpllcibus, 
paucifloris ; spiculis ovatis ; nuce obovata, compressa, trans- 
versim rugosa, setis sursum hispiduhs longiori ; tuberculo 
compresso-conico. 
R. rariflora, Elliott, Bot. S. Car. et Georg. I. p. 58. (excl. syn.) 
Schoenus rariflorus, Michx. Fl. I. p. 36. ct Herb. ! Pcrs. Syn. 
1. p. 60. Muhl Gram. p. 10. 
