ACROCARPOUS MOSSES. 
433 
ACROCARPOUS MOSSES. 
Fam. I. ANDRE^ACE^. 
Andreaea. Ehrhart. 
An alpine genus, entirely confined to the basaltic and 
hard rocks, on the highest ridges of the hills. Rarely met 
with at a less elevation than about 800 feet above sea level. 
I. A. petPOphila. Ehrht. (A. rupestris, Hedvv.). 
Montane B. Range 2-3. 
Frequent on exposed rocks in Upper Teesdale, from a 
little below the High Force to the highest ridges 
(Spruce. 1843). 
Upon the gritstone edges over Lunedale Tarns, Nine 
Standards, Ravens' Seat Moor and Lovely Seat (Baker). 
On the hills east of the vale of York, above Highcliff, 
Guisbro' Moor (Barnes. 1887). 
Fruiting 6-8 mths. 
Several varieties of this moss are given in Dr. Braithwaites' 
British Moss-flora, which have been found upon the highest 
peaks of the Scotch mountains. None of these have been 
met with on the less elevated Yorkshire Hills. 
2. A. alpina (Dill). Smith. 
Montane A. Range 2-3. 
Hard rocks on Cronkley Fell, Teesdale (Spruce. 1843). 
In tolerable plenty upon most of the higher scars in 
Upper Teesdale (Baker). 
Kisdon Scars, near the Force, Upper Swaledale (R. Barnes). 
Fruiting 6-7 mths. 
Hitherto not found on the highest ridges of the hills, 
on the east of the York vale. 
Bot. Trans. Y.N.U., Vol. 3. 
