Knowles — The Maritime and Marine Lichens oj Howth. 123 



Tribe Ramalinei. 



Ramalina farinacea Ach. — On Blackthorns, EarlsclifEe. 



fsubsp. intermedia Nyl. — On Blackthorns, Earlscliffe, associated with 

 the species and more abundant. 

 R. fastigiata Ach. — On Blackthorns, Earlscliffe. 



R. scopulorum Ach. — Abundant on rocks all round the coast ; occasional 

 specimens were noted growing on soil in crevices of rocks at Bottle 

 Quay and on the root-stalks of Thrift plants. Old Boat-house, 

 fvar. incrassata Nyl. — On exposed rocks, frequent. 

 *var. armorica Nyl. — Only noted on shady cliffs near the Needles ; 

 rare. 

 fR. subfarinacea Nyl. — On low rocks near the Martello Tower, Sutton; 



abundant between Casana and the Nose. 

 fR. cuspidata Nyl. — (See page 88.) 



Ramalina A. {R. cuspidata Nyl. subsp. breviuscula Nyl. ?) (see page 94). 

 Ramalina B. {R. cuspidata Nyl. var. crassa Del. ?) (see page 94). 

 Ramalina C. {B. cuspidata Nyl. subsp. breviuscula Nyl. forma gracikscens 

 Cromb. ?) (see page 94). 

 fR. Curnowii Cromb. — Frequent in breezy situations along the upper edge of 

 the low cliffs ; on the west coast only. 



Tribe ITsneei. 



fUsnea hirta Hoffni.— Here and there associated with Parmelias along the 

 upper edge of the cliffs; rare in our area. 



Tribe Parmeliei. 



Evernia prvmastri Ach. — On Blackthorns, Earlscliffe, and on rocks on the 

 west coast; frequent. 



f. sorediata Ach. — Blackthorns, Earlscliffe ; rare. 

 Parmelia perlata Ach.— On Blackthorns, Earlscliffe, and on shady rocks at 

 various places round the coast; rare in our area. 



subsp. ciliata Nyl.— Mossy rocks, chiefly ou the east coast. 

 P. laevigata Ach. — On Blackthorns, rare ; and rocks, frequent. 

 fP. revoluta Nyl. — On mossy rocks, east coast ; rare. 

 P. saxatilis Ach. — On rocks, Drumleek and Glenaveena; common on the 

 east coast. 



f. furfuracea Schaer. — With the species, Glenaveena ; rare. 

 fP. sulcata Tayl. — Ou Blackthorns, Earlscliffe ; rare. 



