116 4. CRUCIFER^. 



Agrarian region. Inferagi-arian zone. 



Descends to the sea level, in the Peninsula. 



Ascends to 50 or 100 yards, in the same province. 



Range of mean annual temperature 52 — 49. 



Native. Viatical. May be held a native in the counties 

 of the south and west coasts of England, as indicated by 

 the limits assigned. In the inland counties of Surrey, 

 Herts and Stafford, it can be considered only as a straggler 

 originally from gardens. On the ballast hills of Tyne, it 

 must equally be held an introduced plant. The locality of 

 " Scarborough," on the authority of Robson, needs more 

 modern confirmation, before it can be received for a native 

 habitat. Is the locality of Danbury, in Essex, a native one } 



58. CORONOPUS RUELLII, Sm. 



Area 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15. 



South limit in Cornwall, Isle of Wight, Kent. 



North limit in Moray and Wigtonshire. 



Estimate of provinces 15. Estimate of counties 50. 



Latitude 50 — 58. English type of distribution. 



Agrarian region. Inferagrarian — Superagraiian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 50 or 100 yards, in England. 



Range of mean annual temperature 52 — 47. 



Native. Glareal and Viatical. Rather plentiful in the 

 south of England ; decreasing northwards ; and becommg 

 quite local in Scotland, where it occurs in a few spots on 

 the east coast ; as also at Portpatrick in the south-west, 

 whence Professor Balfom- has favoured me with a speci- 

 men. 



