CONTRIBUTIONS TO A FLORA OF PORTLAND. 105 



Erophila verna, E. Meyer (Draba verna, L.). Common Whit- 

 low-grass. Native. Rather local. I. Sandy ground 

 Smallmouth to Chesil. II. Verne ; East Weare 

 abundant ; F. 



Cochlearia officinalis, L. Common Scurvy-grass. Native. 

 II. " Portland " ; Rev. H. E. Fox, 1872, in Flo. Dor., 

 Ed. 2, p. 20. Not confirmed, but may occur, having 

 been reported from Chesil Bank Abbotsbury, by Revd. 

 Hy. Riddelsdell ; (Journ. Bot. 1908, p. 384). 



C. danica, L. Danish Scurvy-grass. Native. Abundant. 



I. Smallmouth to Chesil. II. " On the Cliffs ;" Pulteney. 

 Generally distributed. 



Sisymbrium officinale, Scop. Hedge - Mustard. Var. 



leiocarpum, DC. II. "Portland," G. C. Druce, in Journ. 



Bot. 1908, p. 384. A glabrous-podded state, apparently 



rare. 



Obs. Mr. Druce 's Portland records were made in 



1895 and 1907. I am indebted to him for kindly aid. 



S. Alliaria, Scop. Sauce-alone. Native. II. Local and 



rather rare. Near Rifle Butt, King's Pier ; East Weare 



under Prison, 1911 ; F. 

 Erysimum eheiranthoides, L. Wormseed. Colonist. II. 



Very rare. "Portland ;" Druce in Journ. Bot. 1908, 



p. 384. 

 [Brassica oleracea, L. Wild or Sea Cabbage. Native " II. 



Grows, as I have been informed, on the cliffs of Portland 



Isle " ; Pulteney. Long since extinct.] 

 B. nigra, Koch (Sinapis nigra, L.). Black Mustard. Native. 



II. Com. 



Diplotaxis muralis DC. Sand Rocket. Colonist. I. Freq. 

 Railway banks Smallmouth to Chesil. II. Com. 

 Var. Babingtonii, Syme. Colonist. I. Sandy ground 

 Smallmouth to Chesil, much increasing (1876). II. 

 About Verne Ditch (1878), Easton (1908). East Weare 

 (1911) ; F. 



Obs. Both the type and the variety are of recent 

 introduction, principally by railway ballast, and 



