1 RANUNCULACE^. 91 



raiity in those of Humber and Tyne ; its most northern lo- 

 cality, according to Winch, being "by the road-side between 

 Cockerton and Norton," in the county of Durham. 



25. Ranunculus arvensis, Linn. 



Area 1 2 3 4 5 6 7 8 9 10 11 * 13 14 * * * [18]. 



South limit in Dev-on, Isle of Wight, Kent. 



North hmit near Edinburgh and Glasgow. 



Estimate of provinces 14. Estimate of counties 50. 



Latitude 50 — 56. English tyjDC of distribution. 



Agi'arian region. Inferagraiian — Midagrarian zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature 51 — 47. 



Colonist. Agi-estal. Abundant, though still locally so, 

 in some of the more southern counties of England ; de- 

 creasing northwards, and scarcely better than an alien 

 about Edinburgh and Glasgow. If originally introduced 

 with corn, as seems probable, it is now a well-established 

 weed in the south of England. 



26. Caltha palustris, Linn. 



Area, general. 

 .i^Ui./^ South limit in Devon, Isle of Wight, Kent. 

 ///. li. i^y North limit in Shetland, Orkney, Hebrides. 



Estimate of proxdnces 18. Estimate of comities 82. 



Latitude 50 — 61. British type of distribution. 



A. A. regions. Inferagrarian — Superarctic zones. 



Descends to the coast level, in the Peninsula. 



Ascends to 1150 yai'ds, in East Highlands. 



