18 CRUCIFEB^E. 



S. Bishport. Easton. Brislington. Uphill. In some 

 plenty on Worlebury Hill, near Weston-super-Mare, 1880. 

 Yatton. Near Shapwick. 



BRASSICA, Z. 



66. B. campestris, L. Swede. 



ft. B. Rapa, L. Turnip. 



Colonist ; on borders of fields and cultivated land, and on 

 river banks. Bather common. VII. 



"I am unable to distinguish any constant difference 

 between this plant and B. Napus, except that the 

 radical leaves are hispid in B. campestris and glabrous 

 in B. Napus. Sometimes the hairs on the radical leaves 

 are very few, and confined to the midrib." Dr. Boswell- 

 Syme. 



(B. Napus, L. Rape or Cole Seed. An escape from 

 cultivation. Perhaps not distinguishable from the last. 

 " Whole plant very glaucous, and quite smooth." Dr. 

 Boswell-Syme.) 



SINAPIS, L. 



67. S. nigra, L. Black Mustard. 



Native ; on river banks and in waste places. Frequent, 

 especially on the banks of the Avon. VI. VIEL 



68. S. arvensis, L. The Common Charlock. 



Native, or colonist. In cornfields, and about arable land 

 generally. Very common. V. IX. 



69. S. alba, L. White Mustard. 



Native, or colonist ; not so common about Bristol as S. 

 nigra, but occurs frequently on cultivated land. VII. 

 DIPLOTAXIS, DC. 



70. D. tenuifolia, DC. 



Denizen ; on old walls and buildings in Bristol and the 

 vicinity, rare. 



