FLOWERING PLANTS AND FERNS OF INDIANA. 767 



R. hispida (Desv.) BrittoD. Hispid Yellow Cress. 



{Nasturtium palustre hispidiun Gray. ) 

 In wet places in th*e northern counties, usually in swamps or 

 upon their borders. Not frequent. 

 Flowers from June through August. 

 Steuben (Bradner). 



R. 8ES8ILIFLORA (Nutt.) A. 8. Hitchcock. 



(Nasturtium sessiliflorum Nutt.) 

 Occurring only in southwestern counties of the State in low 

 grounds. 



Flowering season from April to July. 



Vigo (Blatchley); Gibson and Posey (Schneck). 



R. Nasturtium (L.) Rusby. Water Cress. 



(Nasturtium officinale R. Br. ) 



Abundant in the northern portions of the State, less frequent 

 in the southern counties. Found in shallow, clear streams and 

 in ditches. The best development is usually found in cool streams 

 near a spring or fed by springs. 



Flowers in May and June. 



Tippecanoe (Cunningham); Kosciusko (Coulter); Putnam 

 (MacDougal); Clark (Baird and Taylor); Jefferson (J. M. Coul- 

 ter); Jay, Delaware, Randolph, and Wayne (Phinney); Franklin 

 (Meyncke); Noble (Van Gorder); Daviess (Clements); Fayette 

 (Hessler); St. Joseph (Rothert); Decatur and Shelby (Ballard); 

 Hamilton and Marion (Wilson); Steuben (Bradner); Monroe and 

 Vigo (Blatchley). 



R. Armoracia (L.) A. S. Hitchcock. Horseradish. 

 (Nasturtium Armoraeia Fries.) 

 Escaped from cultivation and established in moist, rich ground, 

 in various counties. Reported from Clark (Baird and Taylor); 

 Jefferson (J. M. Coulter); Jay, Delaware, Randolph, and Wayne 

 (Phinney); Franklin (Meyncke); Noble (Van Gorder); Gibson 

 and Posey (Schneck); Hamilton and Marion (Wilson). 



R. Americana (A. Gray) Britton. Lake Cress. 

 (Nasturtium lacustre Gray.) 

 Common in slow streams and in shallow lakes in the western 

 part of the State. 



Flowers, June to September. 



Tippecanoe (Cunningham); Vigo (Blatchley); Gibson and 

 Posey (Schneck); Vermillion (Wright). 



