472 78. MELANTHIACEJE. 



North limit in Westmoreland, Northumberland. (Fife?) 



Estimate of provinces 11. Estimate of counties 25. 



Latitude 50 — 55. English type of distribution. 



Agrarian region. Inferagrarian — Midagrarian zones. 



Descends nearly to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 50 — 47. 



Native. Pratal. An infrequent plant, if considered 

 with reference to Britain generally, or even to England ; 

 yet very abundant in certain localities. 1 hesitate to take 

 the only Scottish locality into the area, &c., until verified; 

 which, so far as I am aware, has not been done since the 

 time of Lightfoot. Being known already in 25 counties, 

 the Colchicum may be found to occur in some others, and 

 thus eventually warrant the next higher step in the esti- 

 mated census, that of 30. 



1106. TOFIELDIA PALUSTRIS, Huds. 



Area ^ * jjj * ^j^ * * jj. * 10 11 * * * 15 16 17. 



South limit in York, Durham. 



North limit in Sutherland, Ross. 



Estimate of provinces 5. Estimate of counties 12. 



Latitude 54 — 59. Highland type of distribution. 



A. A. regions. Superagrarian — Midarctic zones. 



Descends to 350 yards, in the East Highlands. 



Ascends to 800 or 850 yards, in same province. 



Range of mean annual temperature 43 — 38. 



Native. Uliginal. This plant constitutes one of the 

 transition links between our Highland and Scottish, or al- 

 pine and boreal, types of distribution. While it affects 

 the mountainous tracts almcst exclusively, its chief preva- 

 lence is found about and below the middle altitudes, from 



