98 P)vceecUngs of the Royal Irish Academy. 



Aspleriium adiantum-nigrum (Linn.) — Eoeks ; frequent all round the 

 coast. 



A. marinum (Linn.) — Abundant, and luxuriant on the sea cliffs every- 

 where. 



A. ruta-muraria (Linn.) — Yery rare. I saw one plant only, on a wall 

 near the chapel. 



Scolopendi'um vulgare (Sym.) — In a cave east of Church Bay; rare. 



Elechnuni boreale (Sw.) — Frequent. 



Pteris aquilina (Lirm.) — Abundant. 



Ophioglossum vulgatum (Linn.) — Short pastures on hills above the 

 chapel; rare. 



Ltcopodiace^. 



Lycopodium selago (Linn.) — Heaths; rare. 



Selaginella spinulosa (A. Br.) — llargins of small rocky lakelets at the 



north-west ; rare. 



Chaeace^. 



Chara fragilis (Desv.) — In several of the lakelets. 



]S'itella opaca (Ag.) — Prequent in the ponds and lakelets. 



!N". translucens (Pres.) — Sparingly intermixed with the preceding 



species. 



Musci. 



The order of the sequence in the following list is the same as that 

 adopted by the late Dr. David lloore in compiling his " Synopsis 

 of the Mosses of Ireland." 



DlCEAJfE^. 



Pleuiidium subulatum (Linn.) — Pastui'e fields; not common. 



Dicranella squarrosa (Schrad.) — Rocky banks of stream ; rare. 



D. cerviculata (Hedw.) — Bogs at the north-west; rare. 



D. subulata (Hedw.) — Seen in one spot only, and veiy sparingly. 



Ceratodon purpui'eus (Linn.) — "Waste gi'ound ; not common. 



Dicranum scoparium (Linn.) — Heaths and rocks ; common. 



D. majus (Turner) — Shady rocks ; not common. 



D. bonjeanii (De Xot.) — Boggy places ; not common. 



Campylopus atrovirens (De Not.) — "Wet heaths; frequent, but always 



barren. 

 C. fragilis (Br. et Schimp.) — Common on the heaths. 



GrEIlDUE^. 



Grimmia pulvinata (Dill.) — Bocks and stones ; very common. 

 Schistidium maritimum (Tuimer.) — Common on the rocks by the 



shore. 

 S. confertum (Funck.), var. incanum. — In several places on amygda- 



loidal rocks. 



