ADDITIONAL Sl'ECIES, ETC. il47 



365, b. Pyrus pinnatifida, Ehrh. 

 (Pyrus fennica, Bah. ed. -3.) 



Area ISoju^Ojif^ojjjjjisjjjj^jiciis^ ib. 



South limit in Somerset ? Surrey ? Kent. 



North limit in Edinburgh ? Arran. 



Estimate of provinces — ? Estimate of counties — ? 



Latitude 51 — 56. English (?) tj^pe of distribution. 



Agrarian region. Inferagrarian — Superagrarian zones. 



Descends to the coast level, or nearly so. 



Ascends to 200 yards, more or less. (" Mountains "). 



Range of mean annual temj)erature 50 — 47. 



Native ? Eupestral, Sylvestral. Very uncertain as a 

 species, and its distribution very imperfectly ascertained. 

 I am induced to give formulas for this and P. intermedia 

 or scandica, apart from P. Aria, chiefly because Mr. Ba- 

 bington so treats them in his Manual of British Botany, 

 third edition ; partly also, because feeling at a loss under 

 which species. Aria or Aucuparia, to j)lace P. pinnatifida, 

 if treated as a variety only. A specimen of P. pinnatifida is 

 in my herbarium from Darenth Wood, Kent, given to me 

 by Mr. James Macnab, with the date of 1827 ; but by 

 whom gathered, I am unable to say. Also, others from 

 Gloucester, Leicester, and Dumbarton, probably taken 

 from planted trees. One of my specimens from Arran, 

 received through the Botanical Society of Edinburgh, has 

 its leaves only semi-pinnatifid, that is, none of the lobes 

 separated much more than half-way down to the midrib ; 

 so that " the lower part of the leaves is not truly pinnate." 

 An Edinburgh example from Dr. Balfour, labelled " P. 

 Aria— Arthur's Seat, 1837", has its leaves lobed as deeply 

 towards the base as is the case in that example from 



