86 Proceedings of the Royal Irish Academy. 



the Germanic type ; but the broad fact of the marked absence of rare 

 species must, I thiak, be accounted for by the greater stamina and 

 adaptability of the common forms ensuiing their success in the struggle 

 for existence under adverse circumstances. 



Having visited Eathlia in spiing, early summer, and again in 

 autumn, I claim, with confidence, that the list of phanerogams in- 

 cludes nearly everything indigenous to the island. The list of 80 

 mosses here given, though doubtless requiring to be extended, may 

 nevertheless be accounted as a substantial estimate of the Bryology of 

 Eathlin, and fairly exhibits the prevailing constituents of the moss- 

 flora. Two of the species — namely, Spliagnumpa'piT.Josum ?cci^Sypnum 

 sendtneri — are additions to the Irish list ; while four others are new 

 records for the J^orth of Ireland. These are — Trichostomum littorale, 

 Tortida hilernica, Tortida atrovirem, and Syirnum speciosum. 



The few SepaticcB which conclude my list are only such as forced 

 themselves on my attention. They have all been previously identified 

 as Iiish plants by Dr. lloore and others ; but one-half of the species 

 have now, for the first time, been assigned a habitat in the jS^orth of 

 Ireland. 



I have been kindly assisted by several specialists in the identifica- 

 tion of the critical forms. Professor Babington obligingly revised the 

 Eubi and several other doubtful plants. The Hieracia were deter- 

 mined by ]\Ir. Backhouse ; the Pond weeds by llr. A. Bennett, of 

 Croydon ; and the Charace^ by llessrs. H. & J. Groves. I am also 

 under obligation to llr. G. A. Holt, of llanchester, who kindly looked 

 over such of my Mosses and Hepatic® as seemed at all doubtful. 



LIST or SPECIES. 



E A:NTIXCn-ACE^ , 



Eanunculus trichophyllus (Chaix.) — In a lakelet at the south end of 



the island ; sparingly. 

 E. hederaceus (Linn.) — llarshy places; not common. 

 E. flammula (Linn.) — Common in wet places. 

 E. ficaria (Linn.) — Common. 



E. acris (Linn.) — Distributed over the island ; but not abundant. 

 E. repens (Linn.) — Frequent ; but not abundant. 

 E. bulbosus (Linn.) — In great abundance. 

 Caltba palustris (Linn.) — Common. 



iN'mrpHJEACE^. 



I^ymphsea alba (Linn.) — Eare; it occurs sparingly in a lakelet east of 



Church Bay. 

 K'uphar lutea (Sm.) — Abundant in lakelets east of Church Bay. 



