454 VIOLACEAE 



4. V. cucullata Ait. In wet places: Me. and Ont. to Ga. and Mo. 

 Common throughout the range in favorable situations except 

 the pine-barrens. 



The following species have been reported as hybridizing with V. cucullata and the 

 various hybrids are to be looked for wherever both the supposed parents occur: cucullata 

 Xemarginata, cucullataXpalmata, cucullataXpapilionacea, cucullataXprimulifolia, and 

 cucullata X sagittata. 



,.Co. 5. V. nephrophylla Greene. Cold mossy bogs and along streams: 

 _«.***' E. Que. to B. C, south to central Me., northwestern Conn., 

 U, V-*" Wise, Col. and Wash. 



f r '*"'»" Known in our range only from Litchfield Co., Conn., there rare 



. . and local. The region is north of the moraine, with a growing 



season of about 145 days and the stations are at 1,400-1,860 ft. 



6. V. obliqua Hill (V. affinis Le Conte). Moist thickets and 



boggy meadows: western N. E. to Wisconsin and southward. 



Common throughout the range, except the pine-barrens and 



east and south of them, apparently always increasing northward. 



The following hybrids have been recorded: V. affinisXBrittoniana, affinisXfimbria- 

 tula, affinis Xhirsutula, affinis Xpalmata, and affinisXsagittata. Mr. Bicknell is of 

 the opinion that the older name V. obliqua Hill, belongs to this species (Bull. Torr. Club, 

 40: 261-270). See this paper also for a discussion of the application of the names 

 V. cucullata Ait. and V. papilionacea Pursh. 



7. V. latiuscula Greene. In dry light soil: Vt. to N. J. (?) 



Known in our area only from Southington and Cornwall, Conn. 

 A rare and little known plant. 



8. V. papilionacea Pursh. In moist meadows and groves: Mass. 



to Minn, and southward. 



Throughout the range except the pine-barrens and east and 

 south of them. 



The following hybrids have been described: V. papilionaceaXsagittata, papilionacea 

 X sororia. 



9. V. Stoneana House. In moist woodlands: N. J., e. Pa. and 



Md. 



N. J. Known only from Middlesex Co., but probably southwest- 

 ward through the Cretaceous region. 



Pa. Chester Co. 



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



not north of the moraine. 175-204 days. About sea level. 



