214 Monograph of North American Rhynchospora. 



and axillary, with short setaceous bracts at the base. Spikelets lan- 

 ceolate. Glumes ovate, acute, white, becoming brownish with age. 

 Bristles 10, retrorsely hispid, nearly li the length of the nut, (equal- 

 ling the nut with the tubercle.) Stamens 2, (3, 2, and 1, Muhl.) 

 Style bifid. Nut lenticular, ovate, somewhat attenuate at the base, 

 when young triquetrous, elevated on a short sti])e upon which the 

 bristles are inserted. Tubercle compressed, one-half the length of the 

 nut. 



Hab. In sphagnous swamps, common ; Canada to Carolina. 



Flowers, July — September. 

 Obs. The North American plant agrees in every respect with 



specimens from the north of Europe. 



25. Rhynchospora capillacea, Torrey. 



R. culmo trigone, gracili ; spiculis 3 — 6, plerumque terminali- 

 bus ; nuce laevi, oblongo-ovata, stipitata, setis retrorsum his- 

 pidis dimidio — tuberculo duplo — longlori. 



R. capillacea, Torrey, ! Fl. I. p. 55. Gray, Gram. Sf Cyp. I. 

 n. 95. 



Schcenus setaceus, Muhl. ! Gram. p. 6. 



Culm 6 to 12 inches high, very slender, smooth. Leaves setaceous, 

 nearly flat ; radical ones short. Spikelets oblong, mostly terminal, 

 with a setaceous bract at the base of each. Glumes chesnut coloured, 

 with scarious margins, oblong-ovate, carinate, mucronate. Bristles 6, 

 large, retrorsely hispid, about twice the length of the nut. Stamens 3. 

 Style bifid. Nut oblong-ovate, somewhat lenticular, attenuate at the 

 base, triquetrous when young, raised on a short stipe which bears the 

 bristles. Tubercle compressed, acute, about half as long as the nut. 



Hab. In swamps, Pennsylvania, Muhlenberg; Penn-Yan, 

 New York, Dr.H.P.Sa,rtwell. On limestone rocks, Water- 

 town, New York. Flowers in July. 



