428 LIMNANTHACEAE 



N. Y. Rare and local on L. I. and S. I., increasing up the Hudson 



Valley. 

 N. J. Known only from Bergen, Passaic, Warren and Hunterdon 



counties. 

 Pa. Pike, Northampton, Lehigh, Bucks, Philadelphia, Delaware 



and Chester counties. 



3. C. heterophylla Pursh. In ponds and slow streams: N. Eng. 

 to Fla., N. W. Terr., Colo, and La. 



Throughout the range, except in the pine-barren streams and 

 ponds, there rare or wanting. 



According to Porter's Flora of Pennsylvania, p. 201, C. aiitumnalis L. (C. bifida (L.) 

 Morong.) has been collected at Sellersville, Bucks Co. I have seen no specimens. The 

 species is otherwise known only from Quebec westward, and in Europe and Asia. 



EMPETRACEAE 

 1. Corema Don. 

 1. C. Conradii Torr. In rocky or sandy soil: Newf. to N. J., 

 mostly near the coast, but occurring in one station on the 

 Shawangunk mountains in Ulster Co., N. Y. 

 N. Y. Formerly collected on L. I., unrecorded from S. I.; known 

 otherwise only from the summit of the Shawangunk Mountains, 

 Ulster Co. 

 N. J. Known only from the pine-barrens. 



Tertiary, common on Beacon Hill, unknown elsewhere: Cretace- 

 ous, o: Older Formations, in edaphically favorable places, but very 

 rare.* 



Pachysandra procumbens Michx. of the Buxaceae has been collected in Delaware 

 Co., Pa., as an escape from cultivation; not otherwise known from the range. 



LIMNANTHACEAE 

 1. Floerkea Willd.f 

 1 . F. proserpinacoides Willd. In marshes and along rivers: Que. 

 to Ont., Del., Tenn. and Mo. 

 Conn. New Haven Co. 

 N. Y. Unknown on L. I. and S. I., rare in Westchester and Bronx 



counties, otherwise unknown. 

 N. J. Locally common from Burlington and Middlesex counties 

 northward. 



* For an account of the factors governing the distribution of this plant see Torreya 12: 

 241, 242. 1912. 



t See footnote, page 76. 



