12 CISTACEJE. 



2. S. arvensis. L. (Wild Mustard, Charlock.) 

 Corn-fields and waste ground. 5-8. 

 Everywhere abundant. 



3. S. alba. L. (White Mustard.) 

 Waste places. 6, 7. 



Occasionally found on waste heaps, such as that by the 

 Canal, Greenford, but not very frequent. Harrow, Harrow 

 Weald, Stanmore, between Whitchurch and Stanmore. 

 (Flor. Midd.) 



RAPH ANUS. (Radish. } 



I. R. Raphanistrum. L. (Wild Radish, Jointed 

 Charlock.) 



Corn-fields and waste ground. 



Side of Railway, between Harrow Station and iron 

 bridge (var. with tawny petals). (Edition i.) Harrow, 

 Roxeth, Pinner. 



Commonly found white, as well as the usual colour, 

 yellow. 



ORDER VII. RESEDACE/E. (MIGNONETTE TRIBE.) 



RESEDA. (Dyer's Rocket.} 



I. R. luteola. L. (Common Dyer's Rocket.) 



Waste places. 6-8. 



Growing as a weed in the Parsonage garden at Pinner. 

 Opposite gate of Kingsbury Churchyard ; Stanmore Heath, 

 a single plant. (Flor. Midd.) 



ORDER VIII. CISTACE^E. (Rocx ROSE TRIBE.) 

 HELIANTHEMUM. (Rock Rose.) 



I. H. vulgare. Gaert. (Common Rock Rose.) 

 Dry chalky banks and hilly places. 7-9. 



