CRUCIFEE^. 19 



G. Horfield. Hotwells. St. Philip's Marsh. Shire- 



hampton. 

 S. Totterdown. Knowle. VII.— IX. 



71. D. muralis, DC. 



Native, or colonist ; abundant about Bristol, Weston-super- 

 Mare, Clevedon, and elsewhere, preferring the coast. 

 This plant is now much more plentiful than it was 

 formerly, and has within a few years greatly extended 

 its area in the West of England. We have both forms 

 or varieties, but the plants are chiefly annual. 

 Occasionally, however, may be noticed a fine biennial or 

 perennial ft. Bahhvjtonii, pi'obably sometimes mistaken 

 for the last species, but always to be distinguished by 

 the length of the pedicels, and shape of the leaves. 



VI. VIII. 

 ALYSSUM, L. 



72. A. maritimum, L. 



Alien ; naturalized on rocks and in waste places near the 



sea. An escape from cultivation. 



S. Anchor Head Rocks, Weston-super-Mare. Clevedon. 



VIII. IX. 

 DRABA, L. 



73. D. muralis, L. 



Native ; in one spot, very rare. 



G. In and about an old quarry at Henbury, where it was 

 discovered by Miss Powell about 1846. Still growing 

 there in 1879, but sparingly. IV. V. 



74. D. verna, L. Common Whitluw-(/rass. 



Native; on walls, banks, and dry rocky places, as on 

 Durdham Down, Bristol; common. III. IV. 



COCHLEARIA, I. 



75. C. officinalis, L. Scun-y-grass. 



Native; in submaritime situations, and on limestone rocks ; 

 very local. 



