384 North American Cyperace^. 



specific phrase of Willendow unaltered, neither of them having 

 seen the plant. 



Hypoporum verticillatum, N. ah E. 



Culm filiform, triquetrous,, and, with the leaves, glabrous ; 

 fascicles 4 — 6, alternate, sessile, rather distant, forming an in- 

 terrupted spike ; bracts minute, setaceous ; nut globose, with 

 a somewhat triangular base, rugose-verrucose, abruptly api- 

 culate. 



H. verticillatum, N. ah Esenb. in Linnaa, 9. p. 303 



Scleria verticillata, Muhl. in Willd. sp. 4. p. 317. (excl. syn.) and 



gram.! p. 266. (excl. syn.); Elliott, sk. 2. p. 261; Gray! Gram. 6f 



Cyp. part 2. no. 100. 



Culm 6 — 8 inches high, very slender. Leaves linear, very narrow, 

 flat, shorter than the culm. Fascicles composed of 4 — 5 very few- 

 flowered, sessile spikelets, rather distant, alternate, sometimes appear- 

 ing as if verticillate. Bracts setaceous, about as long as the fascicles, 

 minutely scabrous upward. Scales of the fertile flowers ovate, glabrous, 

 purple, with a strong, upwardly scabrous, green keel, which is pro- 

 duced into a short cusp. Nut a little more than half a line in diameter, 

 strongly and somewhat rugosely papillose, with a short abrupt mucro- 

 nation, and an indistinctly 3-sided base, destitute of pores. 



Hab. Pennsylvania and Carolina, Muhleiiberg and Elliott; 

 Penn-Yan, New York, Dr. Sartwell ! 



Obs. This beautiful little species resembles H. pergracile, 

 N. ah E., an East Indian species, but is distinguished by its 

 setaceous bracts, &c. 



