218 Monograph of North Amnlcan Rhynchosjwrfr. 
pitata, tuberculiim subulatum gpquante ; setis retrorsum his- 
pidis, nucem duplo longiori. 
R. glomerata, Vahl, Enum. II. p. 234. Pursh, FL I. p. 48. 
Rcem. if Schult. Sys. Veg. II. p. 86. Elliott, Bot. S. Car. 
If Georg. I. p. 61. Torrey, FL I. p. 55. 
R. capitellata, fahl. Enwn. II. p. 235. Rccm. et Schult. Sy$t. 
Veg. II. p. 87. Elliott, Bot. S. Car. Sf Georg. I. p. 61. 
Schoenus glomeratus, Linn. Sj). PI. 65. Willd. Sp. PI. I. p 
236. Miihl.! Gram. p. 8. TVo.lt. Fl. Car. p. 69. 
S. capitellatus, Michx. Fl. I. p. 36. 
S. capitatus, Pers. Syn. I. p. 60. Muhl. Gram. p. 10 r 
Culm 1 — 2 feet high, triane;ular. Leaves narrow-linear, carinate, smooth, 
scabrous on the margin, shorter than the culm. Flowers in corymbose 
or capitate fascicles, on included or somewhat exserted peduncles, la- 
teral and terminal, often 2 or more from the same sheath ; the lower 
ones distant. Spikelets ovate-oblong or lanceolate. Glumes brownish, 
lanceolate, mucronate. Bristles 6, retrorsely hispid, twice as long as 
the nut. Stamens 3. Nut smooth, obovate, lenticular, attenuate at 
the base. Tuherck subulate, coinpressed, equalling the nut. 
Hab. In bogs and moist places ; Canada to Florida. Flowers 
from July to September. 
30. Rhynchospora cephalantha. 
R. capitulis axillaribus terminalibusque, subglobosis, multifloris, 
interdum geminatis ; spiculis oblongo-lanceolatis ; nuce laevi, 
orbiculato-obovata, lenticulari, submarginata, basi attenuata, 
tuberculiim subulatum aequante ; setis sursum vel retrorsum 
hispidis, nuce duplo longiori. 
Culm thick, triangular, 2 — 3 feet high, ieai'fs narrow-linear, flat, sub- 
carinate ; lower ones elongated ; the upper ones much shorter. Capi- 
tuli 2 — 7, large, subglobose, remote, on included or sliglitly exserted 
peduncles, often two or more from the same sheath. Spikelets oblong- 
lanceolate. Glumes fuscous, ovate-oblong, acute. Bristles 6, about 
twice the length of the nut, hispid upward or downward. Stamens 3. 
Style bifid. Nut larger than in R. glomerata; when mature appear- 
