132 Scientific Proceedings, Royal Dublin Society. 



Tribe CLADONIEI. 



Cladonia pyxidata Fr. — Oa peaty ground between the rock and tlie grass 

 along the top of the low cliffs and on the earth-banks, Broad Strand ; 

 frequent. 

 C. cervicornis Schaer. — On the ground, abundant all round the coast, chiefly 

 in earthy crevices among the rocks, and on stony places between the 

 grass and the rock. At Old Boat-house it grows on peaty ground 

 almost within reach of the waves amongst rocks covered with Ramalinas 

 and Physcias. 



fC. sobolifera Nyl. — Commonly associated witii the previous species on tiie 

 slopes at Earlsclilfe and Grlenaveena ; the thallus oecui's in all stages 

 of development, in some places forming large patches amongst the 

 mosses Phascum muticum and Pottia Heimii. 

 C. degenerans Florke. — In shady places amongst fallen rocks at the base of 

 the cliffs ; rare. 



f C. pungens Florke. — In damp shady places on the cliffs, Glenaveena ; rare. 



fC. squamosa Hoffm. — Associated with mosses in the crevices of rocks at the 

 base of the cliffs, Glenaveena and Broad Strand ; frequent. 



fCoccifera Schaer. — On peaty soil, in the crevices of rocks and on bare places 

 among heather along the top of the cliffs; common. 



Sub-tribe LECIDEEI. 



fLecidea coarctata Nyl. — Rocks on the banks above Broad Strand; rare. 



fvar. glebulosa Crombie. — On the ground, Earlscliffe and Glenaveena; 

 more frequent than tlie species. 

 fL, arridens Nyl. — Only seen on coarse quartzites near the top of the earth- 

 banks, Broad Strand, 

 tli. granulosa Schaer. — On peaty soil. Old Boat-house, and at other places 

 on the south and south-west coasts, associated with Cladonia cervicornis, 

 Bilimhia aromatica, and B. melaena. The plant is often barren, forming 

 large glaucous-grey patches on the earth between the rock and the grass 

 in shady situations ; common. 

 fL. protrusa Fr. — On rocks and stones at base of cliffs, Broad Strand and 

 White Water Brook ; frequent. 

 L. parasema Ach. — On Blackthorns; common. 



fvar. elaeochroma Ach. — With the species, but less common. 

 L. contigua Fr. — Plentiful on east and north coasts, 

 fvar. flavicunda Nyl. — North coast ; rare. 



