202 Mojiograijk of Nor! h American h'hi/JichorjwriP. 



culata (vel orbiculato-obovata), compressa, transversim ru- 

 gosa, setis sursum hispidis hreviore. 



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. Corymbs 3 — 5, (the terminal one largest) exsertly pe- 

 dunculate, compound or decompound, many-flowered, diflfusely pa- 

 tulous. Brads 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 striae. Tubercle 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 sufficiently distinguished, however, by its nearly orbicular 

 and less deeply rugose nut, its shorter bristles and patulous 

 corymbs. 



9. Rhynchospora microcarpa, Baldw. 



R. culmo gracili subtrigono ; corymbis sparsifloris, exserte pe- 

 dunculatis, plerumque approximatis ; setis fragilibus, sursum 

 hispidulis, nucem minimam, ovatam, compressam, rugosam, 

 subaequante. 



R. microcarpa, Baldtc. Mss. et Herb ! 



Caespitose. 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 suinmit of the culm ; the lower ones rather 



