1916] Flora of the Boston District,— XXIV 215 



FUMARIACEAE. 



ADLUMIA. 



A. fungosa (Ait.) Greene. Garden escape at Georgetown, Man- 

 chester, Salem, Lowell and Dorchester. 



CORYDALIS. 



C. sempervirens (L.) Pers. Dry soil, often on ledges; frequent 

 throughout. A yellow-flowered form was collected by J. R. Churchill 

 on waste ground, Warren Farm, Brookline, July 21, 1S97. 



DICENTRA. 



D. canadensis (Goldie) Walp. Introduced by F. H. Hitchings 

 in low deciduous woods Purgatory, Norwood, a dense patch made up 

 of this and Dentaria di-phylla (R. A. Ware, Apr. 15, 29, May 13, 1905). 



D. Cucullaria (L.) Bernh. Salt Island, Gloucester (Mrs. Babson, 

 May 16, 1875); rocky hill pasture, Cross's Island, Fssex (May, 1909). 



D. eximia (Ker) Torr. Follansbee's, Raggett's Pond, Andover 

 (C. IF. Swan, Aug. 0, 1SS0, specimen in herb. Yale University). 



FUMARIA. 

 F. officinalis L. Gardens and waste places, frequent. 



CRUCIFERAE. 

 ALYSSUM. 



A. ALYSSOIDKS L. A weed at ten scattered stations, rare. 



ARAB IS. 



A. canadensis L. Dry rocky woods and hillsides; occasional 

 from Hingham and Blue Hills northward. 



A. Drummondi Gray. Rocky places, often in woods; frequent 

 north of Boston. 



