BADICPLA. 113 



The Qenus Radlcula. 



It has always been with reluctance, and under a mental pro- 

 test, that I have in recent years employed the generic name 

 Roripa ; for I have' known that this genus of the yellow water - 

 cresses obtained its first recognition as a type distinct from the 

 common water -cress, with Dillenius ; and that this author as- 

 signed it the generic name Eadicula (Dill. gen. 131 (1719); 

 Hill. Brit, Herb. 364 (1756); Moench, Meth. 363 (1794). This 

 name, then, by law of priority, is the only name the type can 

 claim under that law; and, as I long since determined to employ 

 this name in a monograph of the North American Oruciferae, 

 which I may hope to issue in no very distant future, the pres- 

 ent paper, in which I shall merely indicate the names of our 

 species under the rightful generic caption, will be in nature 

 allied to several others already published in the current volume. 



Of course, the " E." initial to each of the following para- 

 graphs stands for Eadicula. When there is occasion to cite 

 Roripa its synonym, it will be cited in full. 



There is no need of repeating here the species listed under 

 the correct name by Moench. 



E. SINUATA. Nutt. in T. G. under Nasturtium. 



E. SESBIFLORA. Nutt. 1. C. " " 



E. LYEATA. Nutt. 1. C. " " 



E. OBTUSA. Nutt. 1. C. " " 



E. POLTMORPHA. Nutt. 1. C. " " 



E. LIMOSA. Nutt. 1. C. " « 



E. CUEVISILIQUA. Hook. Fl. " Sisymbrium. 



E. SPHABBOCARPA. Gray, PI. Pendl. under Nasturtium. 



E. CURVIPB8. Greene, Pitt. iii. " Roripa. 



E. OCCIDEITTALIS. Greene, Fl. Fr. " Nasturtium. 



E. DiCTTOXA. Greene, 1. c. " 



E. MULTiCAULis. Greene, Pitt. iii. " Roripa 



E. TBNEREiMA. Greene, Eryth, iii. " " 



E. CALTCIKA. Engelm. Warren Eep. " Nasturtium 



Lbaflbts, Vol. I, pp. 113-128. Nov. 34, 1905. 



