Monograph of North American Rhynchospora. 197 



Obs. R> ajmosa of Elliott is described as having a terete 

 culm and a smooth nut. His plant is most probably Schoc- 

 nibs fascicularis of Michaux. 



2. Rhynchospora Torreyana. 



R. culmo gracili, subteretl ; 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 caespitose, 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. Tuhercle compressed conic, 

 very broad at the base, scarcely one-third the length of the nut. 



Hab. Monmouth county, New Jersey, Torrey ; also in wet 

 ground, near Quaker Bridge, New Jersey. July — August. 



Obs. In its nut and bristles this species approaches R, rari- 

 jlora, but its habit is widely different. 



3. Rhynchospora rariflora. Elf. 



R. culmis caespitosis foliisque setaceis ; paniculis simplicibus, 

 paucifloris ; spiculis ovatis ; nuce obovata, compressa, trans- 

 versim rugosa, setis sursum hispidulis longiori ; tuberculo 

 compresso-conico. 

 R. rariflora, Elliutt, Bot. S. Car. ct Gcorg. I. p. 58. (excl. syn.) 

 Schoenus rariflorus, Michx. Fl. I. p. 36. et Herb. ! Pers. Sy7i. 

 I. p. 60. Muhl. Gram. p. 10. 



