FLOWERING PLANTS AXD FEBNS OF INDIANA. 723 



Tippecanoe (Cunningham); Jay, Delaware, Randolph and 

 Wayne (Phinney); Gibson and Posey (Schneck); Vigo (Blatch- 

 ley): Steuben (Bradner). 



P. Hartwrightii Gray. Hartwright's Persicaria. 



In swamps and moist soil in northern part of the State. 

 Flowers from June until August. 

 Steuben (Bradner). 



P. emersum (Michx.) Britton. Swamp Smartweed. 

 (P. Muhlenbergii Watson.) 

 Abundant in the low lands about lakes and in swamps. Grows 

 most vigorously in rich, sandy loams at the margins of ponds and 

 marshes. Often confused with the preceding, which it greatly 

 resembles. 



Flowers from June until September. 



Tippecanoe (Cunningham); Vigo (Blatchley); Kosciusko 

 (Coulter); Lake; Hamilton (Wilson); Steuben (Bradner). 



P. incarnatum Ell. Slender Pink Smartweed. 



In wet soil throughout the State. Found in almost every col- 

 lection, referred to P. Pennsylvanicum, from which it should be 

 easily separated by the shape of the flowering spike and the 

 absence of glands upon the peduncles and pedicels. 



Flowers in June, continuing until late in September. 



Fayette (Hessler); Pound Lake (Deam); Putnam (MacDougal); 

 Tippecanoe (Wright); Kosciusko (Coulter); Hamilton and Ma- 

 rion (Wilson); Steuben (Bradner). 



P. lapathifolium L. Dock-leaved Smartweed. 



Also widely distributed throughout the State, frequenting 

 waste places in relatively dry soil. Confused in many collections 

 with P. Pennsylvanicum. The varieties nodosum and incana are 

 probably also found, but their intergrading with the type makes 

 their separation extremely difficult. 



Flowers from June until September. 



Putnam (MacDougal); Gibson and Posey (Schneck); Clark 

 (Baird and Taylor); Noble (Van Gorder); Jay, Delaware, Ean- 

 dolph and Wayne (Phinney); Tippecanoe and Kosciusko (Coul- 

 ter). 



