882 REPORT OF STATE GEOLOGIST. 



A. incarnata L. Swamp Milkweed. 



Found in marshes and wet soils throughout the State. Of 

 greater abundance in the northern part. 



Flowering from July through September. 



Tippecanoe (Cunningham); Daviess (Clements); Jefferson (J. 

 M. Coulter); Putnam (MacDougal); Jay, Delaware, Randolph, 

 and Wayne (Phinney): Xoble (Van Gorder); Clark (Baird and 

 Taylor); Franklin (Meyncke); Gibson and Posey (Schneck); 

 Fayette (Hessler); Vigo (Blatchley); Kosciusko (Coulter); Hamil- 

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



A. pulohra Ehrh. Hairy Milkweed. 



(A. incarnata pulchra Pers.) 



Found in similar localities and associated with the preceding. 

 Very difficult to separate the two forms, where they grow to- 

 gether in large quantities. This species and incarnata probably 

 have the same range, but definite reports have come from only 

 two counties. 



Flowers July through September. 



Jefferson (J. M. Coulter); Carroll. 



A. obtusifolia Michx. Blunt-leaved Milkweed. 



An early flowering form occurring in dry, sandy soils in a few 

 counties in the State. It is nowhere abundant but probably of 

 wider distribution than the reports indicate. 



Flowers from May through the summer. 



Tippecanoe (Hussey); Floyd (Clapp); Lake and Vigo (Blatch- 

 ley); Clark (Baird and Taylor); Gibson (Schneck). 



A. ex alt ata (L.) Muhl. Poke Milkweed. Tall Milkweed. 

 (J., phytolaccoides Pursh.) 



In thickets and woods in moderately damp soil throughout the 

 State. In many collections confused with A. variegata, a much 

 less widely distributed form. 



Flowers in June and July, extending through September. 



Clark (Baird and Taylor); Jay, Delaware, Randolph, and 

 Wayne (Phinne}^); Franklin (Meyncke); Noble (Van Gorder); 

 Putnam (MacDougal); Tippecanoe (Hussey); Fayette (Hessler); 

 Kosciusko (Chipman); Vigo (Blatchley); Hamilton (Wilson); 

 Steuben (Bradner). 



