158 



codes it was not published as a genus in this sense until 1862, 

 when it was published by the two brothers, Schultz of Zweibriic- 

 ken.* Twelve years before that time (in 1850), F. W. Schultz 

 had published a few binomials under the generic name Pilosella, 

 but only as synonyms under species which he still retained in 

 Hieracium. The earliest use of the name Pilosella for a group 

 of Hieraciuvi seems to be in 1542 by Fuchs. It was used in that 

 sense by Dodoens, Camerarius, Caspar Bauhin, etc., and by Rup- 

 pius as late as 1745, but I have been unable to find it used as a 

 !genus after 1753 and before 1844. Should this, however, be the 

 .case, Arabidopsis Schur should be used for Arabis Thaliana in- 

 stead of Stenophragina. When Schur established Arabidopsis, 

 he not only cited Arabis Thaliana L., Conringia Thaliana Reich, 

 and Sisyuibriiim Thalianuni Gay, but stated that the genus was 

 equivalent to De Candolle's Sisynibriiun sect. VII., Arabidopsis. 

 The writer cannot see why these two names should be ignored 

 and the later Stenophragvia be adopted. The following species 

 of Pilosella are found in North America : 



Pilosella Thaliana (L.) Kostel. Enum. Hort. Prag. 104. 1844. 

 ^Arabis Thaliana L. Sp. PI. 2 : 665. 1753. 

 . Conringia Thaliana Reichenb. Ic. Fl. Germ. 2 : //. 60. 

 .Stenophragnia Thalianuni Celak. Flora 55 : 442. 1872. 

 , Arabis parviflora Raf Am. I\Io. Mag. i : 43. 1817. 



A- species introduced from Europe, and sparingly established 

 ; from Massachusetts to Georgia and Kansas ; collected also in 

 Utah. 



Pilosella Novae-Angliae Rydb. 

 Arabis-petraea Hook. Fl. Bor.-Am. i 142, in small part. 1829. 

 T. &<j. Flora 1:80, mainly. 1838. Not Aj'abis pelraea(L.) 

 Lam. ,1783. 

 Sisymbrium luimile Wats. & Coult. ; A. Gray, Man. Ed. 6: 71. 



1890. JN^ot Sisymbrium liuniile Ledeb. 1830. 

 Braya humilis Robinson, Syn. Fl. I^ : 141, in part. 1895. 



This plant seems to have been included in Hooker's Arabis 

 petraea, but ^ere evidently confused with Arabis lyrata Nutt. and 



* Flora 45 : 417. 1862. 



