218 Rhodora IOctober 



Belmont, specimen in the Boott herbarium according to Dame & 

 Collins, FL Middlesex Co. 6, 1888. Apparently very rare in our 

 district. 



D. maxima Nutt. Lowell (W. P. At wood, May, 1883, specimen 

 in herb. N. E. Botanical Club). This is D. heterophytta of Dame 

 & Collins, Fl. Middlesex Co. 6, 1888. 



DIPLOTAXIS. 



D. muralis (L.) DC. Waste land, Chelsea (II. A. Young <fc C. E. 

 Perkins, Sept. 5-12, 1879; specimen in herb. N. E. Botanical Club). 



D. tkm'ifoi.ia (L.) DC. Charlestown (C. K. Perkins, Sept. 23, 

 1880; specimen in herb. X. E. Botanical Club). 



DRAB A. 



D. caroliniana Walt. Rocky hillsides, Salem Neck; first found 

 by Dr. Charles Pickering in 1824; last report from J. H. Sears, May 

 18, 1901: Wobum (C. /•;. Perkins, June 2, 1SS2 and June, 1883). 



D. VERNA L. Dry soil, Danvers (since 1820), Peabody, Salem, 

 Medford, Cambridge, Wellesley. 



ERUCASTRUM. 



E. POLUCHII Schimp. & Spenn. See Rhodora xiii. 10-12, 1911. 

 Gravelly soil by railway, Sherborn (Martha L. Looiuis, Sept. 4, 1910). 



ERYSIMUM. 



E. cheiranthoides L. Waste places, occasional throughout. 



E. pannonicum Crantz. Woolen-mill yard, Graniteville, Westford 

 (C. W, Swan, Aug. 12, 22, 1S83; specimens in herb. Yale University 

 and N. E. Botanical Club). Native of Europe. E. repandum of 



Dame & Collins, Fl. Middlesex Co. 7, 18SS, of which no specimens 

 can be found, is doubtless of this species, as the specimens were col- 

 lected in the same locality only one and two years later. 



E. REPANDUM L. Uphams Corner, Dorchester (C. W. Swan, July 

 IS, L885; specimen in herb. Yale University). Native of Europe, 

 western Asia and northern Africa. Prof. H. L. Robinson has kindly 

 identified this and the above species. 



