ROSACEAE 365 



2. A. littoralis Rydb. Along the coast and in salt marshes: 

 Lab., Newf. and Que. to S. I. 



Known definitely in our range only from -^ands Point and 

 Southampton, L. I., and from the coast of Conn, and S. I. It 

 has been referred to Potcntilla pacifica Howell. 



9. Comarum L. 

 1. C. palustre L. In bogs and moist places: Greenland to 

 Alaska, south to Conn., N. J. and Wyoming. 

 Conn. Rare and local in New Haven Co., increasing northwest- 

 ward into Litchfield Co. 

 N. J. Budd's Lake, Morris Co. 

 Pa. Wayne and Monroe counties. 



Tertiary, o: Cretaceous, o: Older Formations, rare and local 

 northward. Not south of the moraine. 138-152 days. 715- 

 1,800 ft. 



10. Duchesnea J. E. Smith 



1. D. indica (Andr.) Focke. In fields and waste places: N. Y. 



and Pa., westward to Mo. and southward. Native of Asia 

 A rare adventive, sometimes established. 



11. Fragaria [Tourn.] L. 



Pubescence of scape and petioles divaricate, generally spreading at 

 right angles or somewhat reflexed. 

 Leaflets subsessile; achenes superficial. 



Fruit hemispheric. 1. F. vesca. 



Fruit ovoid or subconic. 2. F. americana. 



Leaflets usually petiolulatc; achenes set in deep pits. 



Fruit subglobose. 3. F. virginiana. 



Fruit oblong-conic. 4- F. canadensis. 



Pubescence of the scape and petioles appressed or ascending; 

 achenes in pits. 5. F. lerrae-novae. 



i. F. vesca L. Cultivated and sometimes escaping: Eastern 

 and Middle States. Native of Europe. 



Rather a rare escape in most parts of our range. The white- 

 fruited form is rarer than the type, but is found in parts of the 

 area and is apparently native northward. 



2. F. americana (Porter) Britton. In woods: Newf. to Man., 



New Mex. and Va. 



Conn. Rare near the coast, increasing but not common north- 

 ward. 



