CRUCIFER^E. 20 



Native. An extremely common weed, found everywhere 

 by roadsides and in waste places. III. X. 



SENEBIERA, Pert. 



91. S. CoronOpUS, Poiret. 



Native ; on damp pasture and waste land ; common. 



VI. IX. 



92. S. didyma, Pers. 



Probably introduced with ballast about Bristol. Now 



frequent. 



G-. Sea Mills, abundant. Westbury-on-Trym. 

 S. Burnham. Weston-super-Mare. VII. IX. 



(Isatis tinctoria, L. " Formerly cultivated about Keyn- 

 sham, S., where I have occasionally found it." Mr. T. 

 B. Flower in Swete's Fl. Brist.) 

 CAKILE, Gaert. 



93. C. maritima, Scop. 



Native ; on the sandy coast of the Channel, between 

 Clevedon and Burnham ; plentiful in some places. 



VL vm. 



CRAMBE, L. 



94. C. maritima, L. Sea-Kale. 



Native ; on the coast, perhaps now extinct. 

 S. Burnham. Mr. T. B. Flower. 



RAPHANUS, L. 



95. E. Raphanistrum, L. 



Colonist ; in cornfields, &c. ; frequent. Sometimes with 

 lilac flowers. VI. VII. 



" The repetition of a generic name with the addition of 

 ' istrum ' or ' astrum ' applied to a species, indicates 

 that it is a useless or contemptible member of that 

 genus, or bears a false resemblance to the species which 

 comprise it." Symes E. B. 



