92 SANDUSKY FLORA. 



ERYSIMUM, L. Treacle Mustard. 

 E. PARVIFLORUM, Nutt.* 



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

 rare. 



LEP1DIUM, 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. sylvestre, 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. Tansy Mustard. 



Cedar Point, Marblehead, Islands; frequent. 

 S. officinale, Scop. Hedge Mustard. 



Common. 



THLASPI, L. 



T. arvense, L. Field Pennycress. 



Sandusky ; rare and adventive. 



