84. JUKCACE^. 49 



Kange of mean annual temperature 52 — 36. 



Native. Ericetal. Possibly this may occur in every 

 county ; but at j)resent it remains uni'ecorded from some 

 of the less fully examined counties of the Thames and 

 Ouse provinces ; besides those of other provinces, from 

 which it is still less likely to be quite absent. Rarely 

 seen above 1000 yards of elevation. 



1164. JUNCUS CASTANEUS, Sm. 



Area ^^^i^^^^^^i^^ [11] ^ ^ ^ 15. 



South limit in Perth, Forfar. 



North limit in Aberdeen. 



Estimate of provinces 1. Estimate of counties 4. 



Latitude 56 — 57. Highland type of distribution. 



Ai-ctic region. Midarctic — Superarctic zones. 



Descends to 800 yards, or lower, in East Highlands. 



Ascends to 1000 yards, or upwards, in same province. 



Range of mean annual temperatui'e 39 — 36. 



Native. UHginal. Very local ; and usually in sparing 

 quantity in its few localities. I do not know in what 

 county to place the Rev. Dr. Stewart's locaKty of " Ben 

 Challum," copied into the Flora Scotica and English 

 Flora. Among the localities in Hooker's Flora Scotica, 

 is one that may intend a higher altitude than above given ; 

 namely, " near the summit of Ben Lawers." Unless some 

 mistake occurred, in regard to the vaguely indicated lo- 

 cality, where the specimen of the Rev. Mr. Harriman was 

 picked, this species did formerly grow in "the county of 

 Durham ;" although not found there for many years past, 

 or recorded by any second collector. 



VOL. in. H 



