202 Monognqjh of North American Bhiinchvsj^iora. 
ciilata (vel orbiculato-obovata), compressa, ti'ansversim ru- 
gosa, setis sursum hispldis breviore. 
Culm about 2 feet high, thick and strong at the base, slender above. 
Leaves linear, shorter than the culm ; cauline ones very short, narrow- 
linear, flat. Coryrnhs 3 — 5, (the terminal one largest) exsertly pe- 
dunculate, compound or decompound, many-flowered, diffusely pa- 
tulous. Bracts setaceous, shorter than the corymbs, smooth or some- 
what scabrous on the margins. Spikelets ovate, about as large as in 
the preceding species. Glumes ovate, mostly mucronate. Bristles 
6, less strongly hispid than in R. multiflora, somewhat exceeding the 
nut. Stamens 3. Style bifid. Nut about half a line in length, 
nearly orbicular, compressed, transversely rugose, with minute lon- 
gitudinal strige. Tuhercle compressed-conic, dilated at the base, nearly 
half as long as the nut. 
Hab. Florida, Le Conte. '• In moist lands and near streams 
of water, Savannah, Georgia; also in East Florida," i?r. 
Baldwin. Flowers June — July. 
Obs. This species is very nearly allied to the preceding, with 
which it is confounded in the herbarium of Dr. Baldwin. It 
is sufSciently distinguished, however, by its nearly orbicular 
and less deeply rugose nut, its shorter bristles and patulous 
corymbs. 
9. Rhynchospora microcarpa, Baldiv. 
R. culmo gracili subtrigono ; corymbis sparsifloris, exserte pe- 
dunculatis, plerumque approximatis ; setis fragilibus, sursum 
hispidulis, nucem minimam, ovatam, compressam, rugosam, 
subaequante. 
R. microcarpa, Baldio. Mss. et Herb ! 
Csespitose. Culms slender, obscurely triangular. Radical leaves narrow- 
linear, somewhat coriaceous, 4 — 6 inches long and about 2 lines wide. 
Cauline leaves few, very narrow, flat, with setaceous tips. Corymbs 
4 — 5, exsertly peduncled and rather loosely flowered ; the 3 upper 
ones approximate at the summit of the culm ; the lower ones rather 
