106 CONTRIBUTIONS TO A FLORA OF PORTLAND. 



are now spreading rapidly. Neither is mentioned 

 in Sole's M.S. List of Weymouth and Portland 

 plants (1782), nor as a Portland plant in G. 8. 

 Gibson's List (1843) ; not observed in this area by 

 T. B. Flower (1858), nor by J. W. White (1864-5). 

 The Author first observed it in I. in 1876. 

 Coronopus didymus, Sm. (Senebiera DC). Lesser Wart Cress. 

 Alien or Colonist. Com. I. Beach wastes. II. Chesil 

 to Southwell, 1911. 



Obs. Usually diandrous with petals present. Pro- 

 bably introduced from America about 150 years ago. 

 Has spread greatly in recent yea-rs. 

 C. procumbens, Gilib. Common Wart Cress. Native. I. 



and II. Com. 



Lepidium ruderale, L. Narrow-leaved Pepperwort. Alien or 

 denizen. II. Very rare. Amongst cinders deposited 

 in newly-made land in the Mere near the Castle, 1908. 

 L. campestre, Br. Field Pepperwort. Native. II. Very 



rare and local. East Weare 1882. 



L. heterophyllum, Benth. L. Smithii, Hook. Native. II. 

 Rare. " Portland ;" Druce in Journ. Bot. 1908, p. 384, 

 under L. canescens, Gren. and Godr. 



L. Draba, L. Whitlow Pepperwort. Alien. II. Rather rare. 

 Godnore and Black Nore in plenty ; field Southwell 

 1910 ; F. ! " Portland " ; Druce in Journ. Bot. 1908, 

 p. 384. 



Obs. Introduced probably within the last 60 years ; 



likely to spread and become an agricultural pest. 

 Thlaspi arvense, L. Penny Cress. Colonist. II. Rare and 



local. Lawns Grove Cliff ; F. I 

 [Iberis amaris, L. Bitter Candytuft. Alien. II. Cornfields 



near Prison, in some plenty, 1857. Not found since.] 

 [Crambe maritima, L. Sea Kale. Native. I. " On Chesil 

 Bank and about We\ mouth," Pulteney. Extinct.] 



Obs. Hutchins wrote, referring to the Chesil Bank, 

 " On it grows much Eryngo and, formerly, 

 much Sea or Beach Kale, which latter is now 



