276 87. FILICES. 



1395. ASPLENIUM VIRIDE, Hucls. 



Area * * * * 5 6 7 8 9 10 11 12 13 * 15 16 17. 



South limit in Glamorgan, Worcester, Stafford, Derby. 



North limit in Sutherland. 



Estimate of i^rovinces 12. Estimate of counties 30. 



Latitude 51 — 59. Highland type of distribution. 



A. A. regions. Midagrarian — Midarctic zones. 



Descends to 100 yards, less or more, in Severn. 



Ascends to 950 yards, in East Highlands. 



Range of mean annual temperature 48 — 38. 



Native. Rupestral. Rather frequent in some of the 

 mountainous provinces, especially the Scottish Highlands. 

 Extremely local in the province of Severn ; but reported 

 on good authority as growing on Ham Bridge, near Clif- 

 ton on Teme. I am not aware of the altitude of that 

 bridge above the sea, but suppose it trifling. The station 

 brings down the descending range of the species into the 

 midagrarian zone, if not more strictly even within the in- 

 feragrarian zone, Dovedale, one side of which is in 

 Staffordshii-e and the other in Derbyshire, may be a 

 second locality in the Severn province, by adhering to 

 comity boundaries, although more naturally it is a portion 

 of the Trent province. There is still one alleged out- 

 Ijdng locality south-eastward of the limit above indicated ; 

 the species having occurred sparingly in the crevices of 

 the crags at Beacon HUl, Charnwood Forest, Leicester- 

 shire, according to Pulteney ; but I am not aware that 

 this locality has been verified by any botanist since the 

 time of that historian. 



