FLOWERING PLANTS AND ^ERNS OF INDIANA. 673 



C. erecta L. Slender Day-flower. 



In moist soils in the southern counties of the State. Admitted 

 upon the authority of Dr. John M. Coulter. A southern form found 

 only exceptionally in our area. 



Flowers in August and September. 



Jefferson (J. M. Coulter). 



C. Virginica L. Virginia Day-flower. 



Throughout the State in moist soils, though found in greater 

 abundance in the southern counties. It seems to affect soils with a 

 considerable admixture of sand. 



Flowers from June until September. 



Jefferson (J. M. Coulter) ; Gibson and Posey (Schneck) ; Clark 

 (Baird and Taylor) ; Vigo (Blatchley) ; Lake. 



TRADESCANTIA L. 



T. Virginiana L. Spider wort. 



Found abundantly in all parts of the State, growing in rich, moist 

 soils, usually in shaded situations. Extremely variable as to size, 

 pubescence, leaf-shape and color of the flower. The differences are 

 so great in some instances as to raise a question as to whether they 

 should not be regarded as distinct species. 



Flowers from May until September. 



Tippecanoe (Cunningham) ; Daviess (Clements) ; Steuben (Brad- 

 ner); Cass and Fayette (Hessler); Jefferson (Barnes); Vigo (Blatch- 

 ley) ; Putnam (MacDougal) ; Franklin (Meyncke) ; Gibson and 

 Posey (Schneck); Noble (Van Gorder); Clark (Baird and Taylor); 

 Jay, Delaware, Randolph and Wayne (Phinney) ; Dearborn (Col- 

 lins) ; Floyd (Clappj ; Vermillion (Wright) ; Knox (Spillman) ; 

 Decatur (Ballard) ; Hamilton and Marion (Wilson). 



T. pilosa Lehm. 



Found in dry, gravelly banks or in drift soils in various parts of 

 the State. Usually frequent in the stations in which it occurs. 

 Flowers from June through August. 

 Vigo (Blatchley) ; Cass (Hessler). 



PONTEDERIACEJE. Pickerel-weed Family. 



PONTEDERIA L. 



P. cordata L. Pickerel-weed. 



Found in all parts of the State, but especially abundant in the 

 lake regions of the northern counties, where it grows in the shallow 

 waters of lake margins. 



