Noi'th AmericaJi Cyperacece. 367 
Bristles 6, slender. Nut much compressed, as in R. gracilenta, but 
smaller; the whole surface of the tubercle minutely hispid-scabrous 
upward. Style 2-parted quite to the place where it separates in falling. 
Hab. North Carolina, 3Ir. Curtis!; Middle Florida, Dr. 
Chayman ! 
Obs. In the Monograph of N. American Rhij7ichospo7-(S, 
no. 26, this plant is referred to as having been sent to us by Mr. 
Curtis. More perfect specimens recently received from Dr. 
Chapman satisfactorily prove that this plant, although allied to 
R.fusca and it. gracilenta, is distinct from either. The ca- 
pillary leaves (like those of Scirpus capillaris), and tlie rough- 
ened tubercle, are characteristic of our plant. It is much more 
delicate and smaller in all its parts than R.fusca, and the nut 
is more flat, in which particular it nearly agrees with R. gra- 
cilenta. The smaller spikelets, the form of the nut, and the 
direction and degree of the hispidness of the bristles at once 
distinguish this species from R. capillacca. 
19. R. GRACiLEXTA, Gray! monogr. I. c. p. 216. 
R. fusca, Gray! Gram. Sf Cyp. part 1. no. 93. (excl. syn.) 
Mr. Drummond collected this species in Texas. 
20. R. DiSTANS, Nutt.gen.l. p. 93, (not of Vahl?) ; 
Gray! monogr. I. c. p. 216. 
Schoenus distans, Michx.! fl. 1. p. 36. 
A variety of this species with a single terminal fascicle, and 
with bristles longer than the nut, occurs among the plants col- 
lected in Texas by the late ]Mr. Drummond. 
21. R. GLOMERATA, Vahl, cnum. 2. p. 234; Gray! Gravi. 
^Cyp. part 1. no. 94, and monogr. I. c. l.p. 217. 
R. capitellata, Vahl, I c. 
SchcEnus glomeratus, Linn. 
S. capitellatus, Michx. ! jl. 1. p. 36. 
Vol. m. 47 
