PARNASSIACEAE 353 



2. S. ternatum Michx. On rocks and in woodlands: Conn, and 



N. J. to Ind., Mich, and Tenn. 



Rare and sporadic in most parts of our area, except the pine- 

 barrens, there rare or wanting; not certainly native in the area. 



3. S. triphyllum (Haw.) S. F. Gray (S. Fabaria Koch.). In 



fields and along roads: Quebec and Ont. to Md. and Mich. 

 Naturalized from Europe. 



A not uncomman adventive in most parts of our range, except in 

 the pine-barrens, there wanting. 

 5. telephioides Michx. has been reported from Northampton Co., Pa. 



4. Rhodiola L. 

 1. Rhodiola rosea L. (S. roseum (L.) Scop.). Newfoundland to 

 Alaska, south to Maine and Pa. Also in Europe. 



Known in our range only from Pike and Bucks Co., Pa., both near 

 the Delaware River. 



PENTHORACEAE 

 1. Penthorum L. 

 1. P. sedoides L. In ditches and swamps: N. B. to Fla., Minn., 

 Neb. and Tex. 



Throughout the area, except the pine-barrens, and east and 

 south of them, there rare or wanting. 



PARNASSIACEAE 

 1. Parnassia [Tourn.] L. 

 I. P. caroliniana Michx. In swamps and low meadows: N. B. 

 to Man., S. Dak., 111., Va. and Carolina (?). 

 Conn. Rare along the coast, especially westward, increasing 



northward. 

 N. Y. Not uncommon on L. I. and on S. I., thence increasing 



northward. 

 N. J. Unknown in the pine-barrens, reported but not definitely 

 known from New Egypt, Ocean Co. ; Hudson and Warren counties, 

 thence increasing northward. 

 Pa. Northampton, Lehigh and Bucks counties. 



Tertiary, o: Cretaceous, only a doubtful record from Ocean Co., 

 NT J. : Older Formations, increasing, but never common, northward. 

 1 17-189 days. Sea level-2,800 ft. 

 24 



