ADDITIONS TO THE BRITISH LICHEN-FLORA. 97 



sparingly on others of the higher Grampians. It is evidently var. 

 dygioides, Linds., of P. encausta, from the typical form of which, very 

 rare on the Braeraar Mountains, as Cairntoiil, it is readily recognised. 



Parmeliopsis hyperopia, Ach. Syn. 208 (P. aleurites, Ach. Nyl. Scan. 

 105). On the lower part of the trunks of pines in mountainous dis- 

 tricts. Perhaps not very rare, as in Glen Dee, Braemar (Crombie), 

 and formerly gathered in the Scotch Higlilands, the locality not speci- 

 fied, by the Rev. J. Dalton. 



Physcia aipolia (Ach.), Nyl. Scan. 111. — On trunks of trees, 

 rarely on stones of walls in cultivated tracts. Probably not rare, at 

 least in the southern counties of England, with its forms acrita, Ach., 

 and tribacia, Ach. 



Placodium murorum, var. pimllum, Hepp. — On calcareous rocks in 

 mountainous regions. Apparently rare, as on the limestone ridge, 

 Morrone (Crombie), but scarcely distinct from states of var. mhiiatum 

 (Hoffm.). 



P. variabile (Pers.), Nyl. Scan. 138. — On rocks in subalpine dis- 

 tricts. Apparently rare and local, at Buxton, Derbyshire (HoU.), but 

 perhaps to be detected elsewhere in the north of England. 



Lecanora ferruginea, var. concilians, Nyl. Scan. 143. On rocks in 

 maritime tracts. Not unfrequent on the coast of Kincardineshire 

 (Crombie), along with ^.f estiva and others. 



L. atro-cinerea (Dcks., Sra. E. B. 209C). — On maritime rocks, Beau- 

 fort Bay, Jersey (Larbalestier), and no doubt in other localities on the 

 British coasts. According to Nyl. in litt., the reaction of the thallus 

 (K -|-) shows this to be a distinct species from L. atro-cinerea. 

 Fries. 



L. imihrina, f. aubJistans, Nyl. in litt. — On granitic maritime rocks. 

 Apparently rare at Portlethcn, Kincardineshire (Crombie) ; var. con- 

 ferta, Dub. On granite stones of a wall near Aberdeen (Crombie), a 

 state with thin greenish or evanescent thallus, and paraphyses scarcely 

 discrete. 



L. hypophcea, n. sp., Nyl. in Flora, 1870, p. 34. — On granite stones 

 of old walls. This new species was gathered by me sparingly, Augu'st, 

 1869, near Old Machar Cathedral, Aberdeen. It is allied to L. privi- 

 gena, Ach., from which it is distinguished chiefly by its greyish-green 

 granulate thallus, and the crenulate or undulate margin of the apo- 

 thecia. 



VOL. VIII. [apiml 1, 1870.] H 



