FLOWERING PLANTS AM) FERNS OF INDIANA. 851 



ADENOCAULON HaUSsk. 



A plant collected by Mr. W. W. Chipman in Kosciusko County 

 is without question to be referred to this species. This is, how- 

 ever, the only recorded station for the State. It is probably not 

 uncommon in wet places in our northern counties, having es- 

 caped detection because of the difficult discrimination of the 

 species of this genus. 



ONAGRA Adans. 



O. biennis (L.) Scop. Common Evening Primrose. 



(CEnothera biennis L.) 



Abundant throughout the State and very variable. Its favorite 

 locality seems to be in dry soil regions with fair exposure to the 

 sun. It also occurs in fair development in moist regions with but 

 slight apparent adaptations. In wet soils the flowering season 

 seems slightly shorter, and the foliage leaves more deeply green. 



The species begins to flower in June and continues through 

 September. 



Tippecanoe (Cunningham); Kosciusko (Coulter); Monroe 

 (Blatchley); Putnam (MacDougal); Clark (Baird and Taylor); 

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

 (Phinney); Jefferson (J. M. Coulter); Dearborn (Collins); Noble 

 (Yan Gorder); Fayette (Hessler); Decatur and Shelby (Ballard); 

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



CENOTHERA L. Evening Primrose. 



<E. LACINIATA Hill. 



(CE. siiiuata L.) 



A variable form chiefly decumbent in our area. It is reported 

 from Vigo (Blatchley); Daviess (Clements); Fayette, a railroad 

 migrant (Hessler). 



<E. RHOMBIPETALA Nutt. 



This form is reported from various counties, chiefly southern. 

 In all the localities found it is reported as "scarce" or rare. 

 While its mass distribution is southern, it is found as far north 

 as Lake. 



Flowers June and July. 



Hamilton (Wilson); Lake. 



