124 Muhlenbergia, Volume 7 



Radicula Integra (Rydb.) 



Roripa Integra Rydb. Bull. Torr. Club 29: 236. 1902. 



Kadicula pectinata (A. Nelsou) 



Roripa pectinata A. Nelson, Proc. Biol. Soc. Wash. 30: 35. 

 1907. 



Radicula Underwoodii (Rydb.) 



Roripa Underwoodii Rydb. Bull. Torr. Club 29: 235. 1902. 



Radicula Williamsii (Britton) 



Roripa Williamsii Br\\ton, Bull. N. Y. Bot. Gard. 2: 171. 

 1901. 



Campe orthoceras (Ledeb.) 



Barbarea orthoceras Ledeb. Hort. Dorp. 1824. 

 Barbarea americana Rydb. Mem. N. Y. Bot. Gard. 1: 174. 

 1900. 



Campe planisiliqua (C. A. Meyer) 



Barbarea planisiliqua C. A. Meyer, in Middendorff, Reise 

 1: part 2, 14. 1856. 



Campe rivularis (Martr.) 



Barbarea 7'ivularis Martr. PI. Crit. Tarn. 1: 9, I862; Fl. 



Tarn. 44. 1864. 

 For a discussion of this species see Bickuell, Bull. Torr. 

 Club 37: 68. 



Campe verna (Mill.) 



Erysimum vernum Mill. Diet. ed. 8, no. 3. 1768. 

 Erysimum praecox Smith, Fl. Brit. 2: 109. 1800. 

 Barbarea praecox R. Br. in Ait. Hort. Kevv. ed. 2, 4: 109. 



1812. 



