FLOWERING PLANTS AND FERNS OF INDIANA. 915 



P. Philadelphia Lam. 



Found as a rule at the edges of gardens or cultivated fields. 

 It occurs in loose, rich soil, and while found in many counties, 

 is nowhere abundant. Formerly cultivated for its fruit. 



Flowers from July until October. 



Daviess (Clements); Jefferson (J. M. Coulter); Clark (Baird 

 and Taylor); Noble (Van Gorder); Putnam (MacDougal); Decatur 

 and Shelby (Ballard); Vigo (Blatchley); Hamilton and Marion 

 (Wilson). 



P. lanceolata Michx. Prairie Ground Cherry. 



In dry soil in open places or along the higher banks of streams. 

 Found usually in fair abundance in any station which it occupies. 



Flowers in July and August. 



Gibson and Posey (Schneck); Clark (Baird and Taylor); Jay, 

 Delaware, Randolph, and Wayne (Phinney); Franklin (Meyncke); 

 Vigo (Blatchley); Kosciusko (Chipman); Marion. 



P. Vlrginiana Mill. 



Common in loose, sandy soil in the southern counties. Ex- 

 tremely variable in our range. 



Flowers from July through September. 



Vigo (Blatchley); Jefferson (J. M. Coulter); Clark (Baird and 

 Taylor); Gibson and Posey (Schneck). 



P. heterophylla ambigua (A. Gray) Rydberg. 



Reported from a single station in southern Indiana. It grows 

 in rich soil, especially that recently tilled, and is probably of 

 frequent occurrence in the State. 

 Knox (Spillman). 



P. VISCOSA L. 



Reported from a number of counties, but always as "scarce" or 

 "rare." The species is of the seashore, and I am inclined to refer 

 plants so labelled to P. heterophylla. Admitted tentatively. 



Flowering from June until September. 



Jefferson (Barnes); Gibson and Posey (Schneck); Clark (Baird 

 and Taylor); Franklin (Meyncke); Jay, Delaware, Randolph, and 

 Wayne (Phinney); Fayette (Hessler); Decatur (Ballard); Hamil- 

 ton and Marion (Wilson); Steuben (Bradner). 



