Rydberg: Studies on the Rocky Mountain flora 323 



Cheirinia Link, Enum. Hort. Berol. 2: 170. 1822 

 The type of the genus Erysimum (Tourn.) L. is E. officinale L., 

 usually known under the name Sisymbrium officinale Scop. If the 

 genus which has usually passed under the name Erysimum is 

 regarded as distinct from Cheiranthus, it must be known under 

 another name. The oldest available name is Cheirinia, with 

 Erysimum cheiranthoides as the type. As I regard the Rocky 

 mountain species well distinct generically from the wallflower of 

 Europe, I adopt Cheirinia as the name for the genus. 



Cheirinia cheiranthoides (L.) Link, Enum. Hort. Berol. 



2: 170. 1822 



Erysimum cheiranthoides L. Sp. PI. 661. 1753- 

 Cheiranthus cheiranthoides Heller, Cat. N. Am. PI. 4. 1898. 



Cheirinia syrticola (Sheld.) Rydb. comb. nov. 

 Erysimum syrticolum Sheld. Bull. Torrey Club 20: 285. 1893. 

 Cheiranthus syrticola Greene, Pittonia 3: 136. 1896. 



Cheirinia inconspicua (S. Wats.) Rydb. comb. nov. 

 Erysimum parviflorum Nutt. in T. & G. Fl. N. Am. 1: 95. 1838. 



Not E. parviflorum Pers. 1807. 

 Erysimum asperum inconspicuum S. Wats. Bot. King Exp. 24. 



1871. 

 Erysimum inconspicuum MacMillan, Metasp. Minn. Valley 268. 



1892. 

 Cheiranthus inconspicuus Greene, Pittonia 3: 134. 1896. 



Cheirinia arida (A. Nels.) Rydb. comb. nov. 

 Cheiranthus aridus A. Nels. Bull. Torrey Club 26: 351. 1899. 



Cheirinia aspera (Nutt.) Rydb. comb. nov. 

 Cheiranthus asper Nutt. Gen. N. Am. PI. 2: 69. 1818. 

 Erysimum asperum DC. Syst. 2: 505. 1821. 



Cheirinia elata (Nutt.) Rydb. comb. nov. 

 Erysimum elatum Nutt. in T. & G. Fl. N. Am. 1: 95. 1838. 

 Cheiranthus elatus Greene, Pittonia 3 : 135. 1896. 



