90 SANDUSKY FLORA. 



ARABIS, L. Rock Cress. 



A. CANADENSIS, L. Sicklc-pod. 



Perkins, Alargaretta, Peninsula, Johnson's 



Island, Put-in-Bay. Middle Bass; infrequent. 

 A. DENTATA, Torr & Gray. 



Cedar Point, Florence. Johnson's Island, North 



Bass, Green Island ; infrequent. 

 A. DRUMMONDii, Gray. (A. confinis. Watson.) 



Cedar Point and Islands ; frequent. 



A. HiRSUTA, Scop. 



Marblehead ; common. Catawba. Mouse Island, 

 Margaretta, Huron River. 



A. L.EVIGATA. DC. 



Frequent. Islands. * 



A. LYRATA, L. 



Cedar Point; common. Perkins, Marblehead. 



A. PERFOLIATA, Lam. Tower Mustard. 



Johnson's Island ; rare. 



BARBAREA, R. Br. Winter Cress. 



B. VULGARIS, R. Br. Yellow Rocket. 



Frequent, Green Island. Some of the specimens, 

 at least, belong to the "variety" stricta, which 

 may be distinct. 



BRASSICA, L. 



B. napus, L. Rape. 



Sandusky, Vermillion ; adventive. 

 B. nigra, Kock. Black Mustard. 

 Common. 



B. sinapistrum, Boiss. Charlock. 



Abundant. 



CAKILE, Tourn. Sea-Rocket. 



C. MARITIMA, Scop. ( C. AMERICANA, Nutt. ) 



Shores of Lake and Bay ; common. 



