152 4. CRUCIFER.E. 



Sisymbrium polyceratium, Linn. 



Area ( * * * 4). 



Alien. I am unawaie of any locality for this plant, ex- /^e. /Vj 

 cept the vicinity of Buiy, where it has appai-ently held its ///'l J^ 

 ground for many years. In Turner and DUlwyn's Guide *y. 



the locality is given by Sir T. G. CuUum, " under garden 

 walls in Northgate Street, Bmy, and several lanes adja- 

 cent." In the ' New Guide ' Dr. Bromfield says, " Still 

 growing in the greatest abundance at the foot of walls, 

 in Schoolhouse Lane, between Garland and Northgate 

 Streets; also in the farther part of Gailand Street, and 

 thence spreading, with equal prolusion, over the Short 

 Bracklands, mixed with S. officinale and Coronopus Ruel- 

 lii ; and even creeping beyond the precincts of the town, 

 towards Fomham, but very sparingly ; but everywhere as- 

 suming the aspect of an indigenous weed." A writer (" J. 

 D." — Mr. Denson, I presume) in the Magazine of Natu- 

 ral History, remarks, " I think that it emanated from the 

 garden of the late Sir T. G. Cullum, Bart." 



105, Erysimum cheiranthoides, Linn. 



Area 1 2 3 4 (5 | 7 8 9 10 11 12 * 14 15 l6).io,t/(-(^l.Ji% 



South limit in Devon, (Dorset?), Kent. 



North limit in Somerset, Cambridge, Norfolk. 



Estimate of provinces 4. Estimate of counties 10. 



Latitude 50—7-53. Gei-manic (?) type of distribution. 



Agrarian region. Inferagrarian zone. 



Descends to the coast level, in the Peninsula. 



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



I 



