96 44. COMPOSIT^E. 



Descends to the coast level, in Thames or Ouse. 



Ascends, at the coast level, to N. Wales ? 



Range of mean annual temperature 50 — 49. 



Native. Littoral. This plant appears to be gi-adually 

 becoming extinct in England. It is still to be found in 

 Suffolk ; and may yet exist, in diminished quantity, in An- 

 glesea. Along the southern coast it is nearly or quite ex- 

 tinct ; while there appears no sufficient reason for denying 

 its former existence in the counties above mentioned inter- 

 rogatively for the southern limit. 



622. Tanacetum vulgare, Linn. 



Area general. 



South limit in Cornwall, Tsle of AVight, Kent. 



North limit in Shetland, Orkney, Hebrides. 



Estimate of provinces 18. Estimate of counties 75. 



Latitude 50 — 61. British type of distribution. 



Agrarian region. Inferagi'arian — Superagiarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 400 yards, in E. Highlands (Dickie). 



Range of mean annual temperature 52 — 42. 



Native. Viatical. Introduced into many of its locali- 

 ties, especially in the more northerly provinces, and very 

 likely carried by some cultivator to the considerable eleva- 

 tion indicated for it by Dr. Dickie. I am quite unable to 

 distinguish between the natural and the artificial localities, 

 according to published records, and am thus compelled to 

 treat this plant as native throughout Britain. Since it is 

 said to grow in Faroe and all over Scandinavia, the climate 

 and area of all Britain, below the arctic zones, would ap- 

 pear within the natural range of the Tanacetum. 



