Ncn-th Amnican Cyperacea. 363 
the Annals, is so full that it was quite unnecessary to describe 
the plants anew : I have therefore merely given his list of the 
species with some alterations, which he has thought it advisalle 
to make, together with some valuable additional matter which 
has been received since his monograph was written. 
17. RHYNCHOSPORA, VaJd. 
Flowers perfect or polygamous. Spikelets few-flowered. 
Scales loosely imbricated, or obscurely bi-trifarious ; the 
lowermost smaller and empty; one, two, or three of the others 
bearing a perfect flower ; the remainder being ;taminate or 
empty, or sometimes (as in jR. miUacca ^'caduca,) all except 
the outermost scales fertile. Perigyxium composed of 6 
(sometimes 10 or 12) plumose or naked, retrorsely or an- 
trorsely denticulate or scabrous bristles. Stamens 3 (rarely 
2, 6, or 12). Style bifid. Xut crustaceous, lenticular or 
subglobose, smooth or transversely rugose, crowned with the 
dilatsd, persistent and distinct base of the style. — Culms more 
or less triangular, simple, leafy ; inflorescence terminal and 
axillary, corymbose, paniculate or fascicled, loosely or densely 
clustered. 
Rhynchospora, Vahl, enum. 2, p. 229 ; R. Brown, pTodr. 
1. p. 229; Nutt. ge?i. 1. p. 33; Lcstib. ess. fam. Cyp. p. 37 ; 
Elliott, sTi. 1. p. 57; Gray, mofiogr. in ann. lye. nat. hist. New 
Yo7-Ji,3. p. 191. (excl. K. corniculata ^' macrostachya) ; Nees 
ah Ese7ib. in Wighfs contrib. p. 71. and in Linncea, 9. p. 297. 
Species of Schoenus, Linn., Lani'k., Michx., Muhl., &c. 
Chaetospora (partly), Humb. Bonjjl. and Kuntli, syn. pi. 
equinoc. orb. nov. 1. p. 157. 
% 1. Nut siibglobose-ovate ; bristles of the perigynium densely 
woolly. — Erioch^te. 
Obs. The species of this section are allied to Chcetospora, 
R. Brown, from which they are distinguished by their bifid 
