33 



Dicentra oucullaria, DO. (Dutchman's Breeches.) 

 Gloucester, 1863 and 1877 (Mrs. Babson) ; " Andover" (memo. Mrs. 

 Downs). Bare. 



Corydalis glauca, Fursh. (Cobydalis.) 

 Rocky hills. Not very common. 



Fumaria ofB.cinalls, L. (Common Fumitory.) 

 Ipswich, Danvers (Oakes, 1819) ; Wenham (Miss Davis) ; Salem 

 (S. B. Buttrick) ; Boxford (Miss Perley). A rather scarce escaped 

 plant. (Int. from Eu.) 



CBUCIPER^. 



(Mustard Family.) 



Nasturtixun offlcinale, JR. Br. (European, or True Water 



Cress.) 



"Lynn" (Tracy's list) ; "Andover" (memo. Rev. H. P. Nichols). 



It is very doubtful if this species grows in the county, as the cress 



usually found is Cardamine hirsuta. 

 Nasturtium palustre, DG. (Marsh Cress.) 



In wet places. Quite common and variable. 

 ITasturtium Armoracia, Fries. (Horseradish.) 



Often escaping from cultivation. (Introduced from Europe.) 



Cardamine rhomboidea, DO. (Spring Cress.) 



Not rare in wet places. 

 Cardamine hirsuta, L. (Small Bitter Cress.) 



Brooks and other wet places. Common. Sold in the market as 



Water Cress and often supposed to be N. officinalis. 

 Var. sylvatica. 



"Lynn" (Tracy) ; " Essex County" (memo. Dr. Charles Pickering.) 



Arabis leevigata, DO. 

 Beverly (John C. Phillips). 



Arabis Canadensis, L. (Sickle-pod.) 

 Topsfleld (Oakes) ; Danvers (J. H. Sears) ; and a few other local- 

 ities. Rather scarce. 



Arabis perfoliata, Lam. (Tower Mustard.) 



" Paradise," Salem, 1819 (S. Bass) ; Essex County (Oakes, memo. 

 Hovey's Mag., Vol. VII) ; near the Ocean House, Revere Beach (C. 

 E. Faxon). 



Barbarea vulgaris, B. Br. (Yellow Rocket.) 

 Quite common in damp places. 



Sisymbrium o£9.cinale, Scop. (Hedge Mustard.) 

 A common weed. (Nat. from Eu.) 

 3 



