370 ROSACEAE 



N. J. Known only from near Princeton; not recently collected. 

 Pa. Bucks, Philadelphia and Delaware counties. 

 A rare and highly localized species. 



2. G. virginianum L. Thickets and wet places: N. B. to N. Car., 



Mo. and Minn. 



Throughout the range except in the pine-barrens, and the coastal 

 plain of L. I., there wanting; rare and local in the area immedi- 

 ately surrounding the pine-barrens. 



3. G. canadense Jacq. Banks and among bushes: N. S. to Ga., 



Tex., Kan. and the Black Hills of S. Dak. 



Very common throughout the range, except in the pine-barrens, 

 there rare or wanting. 



4. G. Meyerianum Rydb. Que. to N. Y. and Pa. 



Known in our area only from Tuxedo Park, N. Y. and from Bangor 

 and Easton, Pa. 



5. G. hirsutum Muhl. (G. flavum (Porter) Bicknell). Woods 



and banks: Conn., N. Y. and Ohio to Ga. and Tenn. 



Conn. Throughout the state, but not very common. 



N. Y. On L. I. and S. I. and near the city of New York; in West- 

 chester Co., apparently wanting elsewhere. 



N. J. Throughout the state, except the pine-barrens and east and 

 south of them. 



Pa. Luzerne, Northampton, Bucks and Chester counties. 

 Distribution not as yet understood. 



6. G. strictum Soland. Low meadows: Newf. to Pa., Mo., Mex. 



and B. Col. 



Conn. Rare and local over most of the state. 



N. Y. Rare on L. I. and S. I., and in the Bronx, thence increas- 

 ing and common northward. 



N. J. Freehold, Monmouth Co. and New Egypt, Ocean Co., rare; 

 becoming more frequent in Somerset and Union counties, thence 

 increasing northward. 



Pa. Pike, Monroe, Northampton and Bucks counties. 



Tertiary, not on Beacon Hill, rare elsewhere: Cretaceous, o: 



Older Formations, increasing northward. 1 18-189 days. Sea 



level-2,800 ft. 



This species is supposed to hybridize with G. rivale and the 

 hybrid is to be looked for wherever both the supposed parents 

 occur. 



