92 SANDUSKY FLORA. 



ERYSIMUM, L. Treacle Mustard. 

 E. PARVIFLORUM, Nutt.* 



One place along L. E. & W. Ry., west of Castalia ; 

 rare. 



LEPIDIUM, L Pepperwort. Peppergrass. 



L. APETALUM, Willd. ( L. INTERMEDIUM, Gray. ) 



Sandusky ; infrequent. 

 L. campestre, R. Br. 



Sandusky, Perkins, Margaretta, Peninsula, 



Kelley's Island, Put-in-Bay. Common in places, 



especially on the Peninsula. 

 L. viRGiNicuM, L. Wild Peppergrass. 



Common. 



NASTURTIUM, R. Br. Water-Cress. 



N. LACUSTRE, Gray. Lake Cress. 



Shinrock ; rare. 

 N. officinale, R. Br. True Water-Cress. 



Castalia ; frequent. 

 N. PALUSTRE, D C. Marsh Cress. 



Common. On the Islands, and generally near 



the Lake or Bay, the variety hispidum is more 



common. 

 N. sylrestre, R. Br.* Yellow Cress. 



Four places in Perkins, three of them near or not 



far from Pipe Creek. 



SISYMBRIUM. L. 



S. alliaria, Scop. 



"Kelley's Island." Probably adventive. 

 S. CANESCENS, Nutt. Tans}' Alustard. 



Cedar Point, Marblehead, Islands; frequent. 

 S. officinale, Scop. Hedge Mustard. 



Common. 



THLASPI, L. 



T. arvense, L. Field Pennycress. 



Sandusky ; rare and adventive. 



