i6 



HAB. Higher mountains of Scotland, on dripping rocks. Fr. 7-8. 



Ben Nevis (Hooker and Borrer 1808) ! Ben Cruachan, Argyleshire (Borrer 1810) ! Ben 

 Macdhui and Cairngorm (Croall) ! ! 



This fine species appears to attain its fullest development on the 

 Grampian range ; although it is found in Scandinavia, and on the higher 

 peaks of the Pyrenees, Switzerland, the Tyrol, and eastward to Salzburg and 

 Carinthia, we have not seen any specimens to equal those of native growth. 



Var. (3. Fuscescens. HOOK. 



Stems more flexuose and flaccid, with strongly falcate leaves of a brown 

 color. 

 SvH.A.nivalis ft. fuscescens HOOK, in Trans. Lin. Soc. X, 395 (1810). 



A. nivalis HOOK. ZETTERST. Mon. Andr. Scand. 23 (1855). HARTM. Skand. Fl. 7 ed. 

 400 (1858). 



HAB. With the typical form on Ben Nevis and Ben Macdhui (Hooker] \ \ 



This form is described as the type by Zetterstedt, because as he says, 

 it is the common form in Scandinavia and assumed to be therefore more 

 typical. There does not seem any reason to disturb Hooker's original 

 arrangement, although it is certain the variety more frequently bears fruit, 

 while the type is richer in male inflorescence. 



TAB. I. 



A. Andreaa petrophila. 



a. typical form (Ben Lawers, Braithwaite). ft- Var. homomalla (Braemar, Hunt}. 

 y. Var. acuminata (Ben Nevis, George). 8. Var. flaccida (Braemar, Hunt). Var. 

 sylvicola (Ben Macdhui, Hunt). . Var. gracills (Loch-na-Gar, Sim). *]- Var. alpcstris 

 (Braemar, Croall). $. Var. sparsifolia (Ben More, George). 



B. Andrea a alpina. 



a. typical form (Ennerdale, Baker), y. V&r.Jlavicans (Ben Nevis, Hooker). 



C. Andreaa crassinervis (Hebden bridge, Hunt}. 



TAB. II. 



A. Andreaa Rothii. 



a. typical form (Dartmoor, Holmes), ft. Var. frlglda (Ben Macdhui, Croall). y. Var. 

 hamata (Luggielaw, Lindberg). 8. V&r.falcata (Snowdon, Schimper). 



B. Andreaa nivalis. 



a. typical form <? (Ben Macdhui, Hunt), ft. Var. fuscescens ? (Ben Nevis, George). 



i. Branch in a moist state. 2. Leaf x 25. 2 a. Apex of leaf dry. 2 aa. Areolation of 

 apex moist, aab. Ditto of base x 180. 2x. Transverse section of leaf. 3. Perichatial 

 bract. 4. Male inflorescence with bract, antheridium and paraplwses. 5. Capsule dry. 

 6. Calyptra. 



