POACEAE 113 



37. P. leucothrix Nash. In dry sandy soil: N.J. to Fla. and Miss., 



Cuba. 



Confined, in our area, to the southern part of the pine-barrens 

 of N. J., a region with a growing season of about 200 days, at about 

 sea level and underlaid by the Beacon Hill formation. 



38. P. Wrightianum Scribn. In sandy or mucky soil: Mass. to 



Fla., west to Tex., Cuba. 



Known, in our range, only from Wading River, L. I. and near 

 Bennett, Cape May Co., N. J. 



39. P. huachucae Ashe (P. huachucae silvicola Hitchc. & Chase. 



P. unciphyllum of some local floras, not of Trim). In dry 

 soil: Me. to S. Dak., Fla., Tex. and Cal. 



Common throughout the range, except the pine-barrens, there not 

 recorded. 



40. P. scoparioides Ashe. In dry soil: Vt. to Pa., Del. and Minn. 



Rare; known only from Southington and East Lyme, Conn, and 

 from Bull's Island (in the Delaware) Hunterdon Co., N. J. 



41. P. languidum Hitchc. & Chase. Open woods: Me., Mass. and 



E. N. Y. 



Known in our range only from Platte Clove, in the Catskills, a 

 region at about 2,500 ft., north of the moraine and with a growing 

 season of about 120 days. 



42. P. villosissimum Nash (P. atlanticum Nash). In dry soil: 



Mass. to Minn., Fla. and Tex. 



Conn. Franklin, Old Lyme, East Hartford, Southington and 



Southbury; rare. 

 N. Y. L. I., S. I., the Bronx and Westchester Co.; rare. 

 N. J. Rare in Passaic and Bergen counties, increasing southward 



and common on the coastal plain. 

 Pa. Northampton, Delaware and Chester counties, rare. 



Tertiary, common: Cretaceous, less common: Older Formations 

 scattered: 159-220 days. About sea level. 



43. P. pseudopubescens Nash. In dry soil: Conn, to 111., Fla. 



and Miss. Rare in our range, and scattered. 



Known in our area only from South Britain and Southbury, 

 Conn., and Clementon, Atsion, Wildwood, Mickleton and Camden, 

 N.J. 



9 



