354 67. ASARACE^. 



reported to occur in Somerset, Dorset, Wilts, Hants, Sur- 

 rey, Berks, Bucks, Herts and Suffolk. The counties thus 

 amount to 16 in the whole, including Devon. The proper 

 estimate may eventually rise to 20, as nearer the exact 

 number than that of 15, which best accords with our pre- 

 sent knowledge of the comital distribution of the Thesium. 



958. AsARUM EUROPyEUW, Linn. ^-^^ '^^^.^n 



Area * * (3) ***** 9 10 (11) 12 * (14). 



South limit in York, Lancashire. 



North limit in Westmoreland. 



Estimate of provinces 3. Estimate of counties 3. 



Latitude 53 — 55. Local (Scottish ?) type of distribution. 



Agrarian region. Midagrarian zone. 



Descends to ? (Lowest altitude trifling). 



Ascends to 100 or 200 yards, in England. 



Range of mean annual temperature about 48 — 47. 



Denizen. Sylvestral. Not ascertained to be indigenous 

 in this country in a perfectly satisfactory manner, although 

 the presumption seems to be greater in favour of, than op- 

 posed to, that view. The strongest testimony appears to 

 be for its nativity in Yorkshire ; and Mr. Roberts Leyland, 

 a resident botanist of experience, writes thus from Halifax: 

 "Asarum is plentiful in Broadbottom Wood, near My- 

 tholm-royd, the only situation in which we find it, with the 

 exception of a small quantity in Harper-royd Clough; and 

 I have some doubt of its being truly indigenous in either 

 situation." Besides the three counties above mentioned, 

 those of Berks, Northumberland, Cumberland and Linlith- 

 gow have been named. The first and fourth of these re- 

 quire verification ; in the second and third, Winch men- 

 tions the Asarum as " naturalized." 



