

42. VALERIANACE.E. 25 



530. Centranthus Calcitrapa, Dufr. 



Area (* * 3). 



Alien. This has veiry slender claims to inclusion among 

 our British plants as a naturalized alien. It has, however, 

 existed on walls at Eltham, in Kent, for half a century, and 

 was formerly found on a garden wall at Enfield, in Middle- 

 sex. See Phytologist, iii. p. 649, where some explanations 

 are given by Mr. E. Forster. 



^^^^^/■^j-ff 531. Valeriana dioica, Xm». 



Area 1 2 3 4 5 6 7 8 9 10 11 12 * 14 15 16. 



South limit in Devon, Isle of Wight, Kent, ^^t^^^"-^^ . 



North limit in Linlithgow, Fife ? Dumbarton } 



Estimate of provinces 16. Estimate of counties 50. 



Latitude 50 — 57. English type of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 400 or 450 yards, in Lake province. 



Range of mean annual temperature 51 — 43. 



Native. Paludal. In most English counties, and re- 

 corded in half a dozen of the Scottish. In the Flora Glot- 

 tiana there is the single locality of " Balvie," which is not 

 copied into the Flora Scotica of Hooker, and I am micer- 

 tain whether the alleged locality is coiTectly referred to the 

 county of Dumbarton. Mr. Lawson enumerates V. dioica 

 among the plants of Fife ; and there seems no improba- 

 bility in this, except that the county has been examined by 

 many other botanists, who do not appear to have recorded 

 its existence there. In consequence, the names of these 



