New or rare Plants of the State of New York. 233 



JUNCEJE. 



30. Juncus Stygius, Linn. Willd. Sp. PL II. p. 215. 

 Wahl. Fl. Suec. 1. p. 213. 



In an extensive sphagnous swamp bordering Perch Lake, 

 Jefferson county : August. This species has not previously 

 been known as a native of North America. 



31. J. setaceus, Rostkow, June. j>. 13. tab. 1. Torrey, 

 FL 1. p. 360. 



Shore of Lake Ontario, near Sackett's Harbour. 



32. J. echinatus, Muhl. Gram. p. 207. Ell. Bot. S. 

 Car. <^ Georgia, I. p. 410. 



With the preceding ; perhaps not distinct from J. polyce- 

 ■phalus, Michx. 



PODOSTEME.E. 



33. Podostemon ceratophyllum, Michx. FL II. p. 165. 

 tab. 44. 



In flowing water, Watertown, Jefferson county, Dr. Crawe. 



graminej:. 



34. Vilfa heterolepis, (sp.nov.); foliis setaceis ; pani- 

 cula pyramidata, sparsiflora ; gluma inferiore subuliformi, su- 

 periore ovata, cuspidata, subduplo breviori ; valvulis perianthio 

 subaequalibus, muticis, gluma extima paulo minori. 



Root perennial. Culrnl — 2 feet in height, smooth. Leaves convolute- 

 setaceous, with the margins hispidly scabrous upward ; the lower ones 

 ecpialling the culm ; the upper ones much shorter. Lower sheaths pilose ; 

 upper ones smooth. Panicle pyramidal, spreading or subcontracted ; 

 branches solitary, nearly simple, few and loosely flowered. Glumes pur- 

 plish ; the outer one reduced to a subula, about one half the length of the 

 inner one, which is strikingly membranaceous in texture, ovate or ovate- 

 oblong, one-nerved, with the nerve produced into a short cusp. Valves 

 of the perianth oblong-lanceolate, rather obtuse, thin and membranaceous, 

 a little shorter than the superior glume. Inferior valve, obscurely one- 



