DUBLIN NATURAL HI8T0BT SOCIETY. 99 



Dublin: f or iheZowland* — Polyttiehumangularet Seolopendriwn vul- 

 gare, Dryopteris affinis, Asplenium trichomanei. For the Highlands and 

 Bogs — Lophodium multijhrum, Athgrium fltx famina, Drgopt&ris Bor- 

 reri, Dryopteris qffims, Lomarta sptcantf Asplenium adiantum-nigrum, 



Kildare: Lowlands — Polystichum aculeatum, Polystichum angulare, 

 Seolopendrtum vulgar e^ Lophodium multiflorumj Dryopteris affinisy Athy- 

 rium Jilix famina. 



Tyrone : Highlands — Athyrium filix faminay Lophodium Fcmeseeii, 



Lophodium multijlorum^ Hymenophyllum unilaterale. Lowlands Poly' 



itichum aculeatum, Dryopteris Borreri, Dryopteris affinis. 



Clare and Galway : Lowlands — Polystichum aculeatum, Polystichum 

 angularCf Polypodium vulgar e, Athyrium filix fccmina, Amesium rata 

 muraria, Grammitis ceterach, Lophodium Foenesecii, Asplenium adian- 

 tum-nigrum. Highlands and Bogs — Lomaria spicant, Lastrea montana, 

 Loph. multiflora, Asplenium trichomanes, Cystopteris fragilis, Osmunda 

 regalis, Hymenophyllum Tunbridgense, Polypodium vulgare. 



Kerry : Lowlands — Polypodium vulgare, Polystichum angulare, Loph, 

 Foenesecii, Dryopteris affinis, Dryopteris Borreri. Highlands and Bogs — 

 Osmunda regalis, Hymenophyllum Tunbridgense, Hym. unilaterale, Tricho- 

 manes radicans, Hemestheum phegopteris, Polystichum angulare, Asple- 

 nium acutum, 



Waterford and Cork : Lowlands — Scolopendrium vulgare, Polystichum 

 angulare, Grammitis ceterach^ Asplenium adiantum nigrum, Polypodium 

 vulgare, Lophodium multiflorum. Highlands and Bogs — Lophodium Fee- 

 nesecii, Dryopteris affinis, Hymenophyllum Tunbridgense, Osmunda regalis. 



Besides these, in the following districts ferns of local distribution 

 occur, but not abundantly enough to impress a general character on the 

 Flora :— 



In Kerry : Asplenium acutum and viride, and Adiantum capillus- Ve- 

 neris. Cork : Asplenium lanceolatum, Trichomanes radicans, Waterford : 

 Trichomanes radicans, Lophodium spinosum. Tipperary : Lophodium 

 spinosum. Wicklow : Trichomanes radicans, Hemestheum phegopteris. 



Of the Irish species, all, except Asplenium acutum, have occurred in 

 England, but many grow more abundantly and luxuriantly in Ireland ; 

 while, as has been dready shown, many of the British species are un- 

 known in Ireland. Thes^ latter, we are justified in surmising, are either 

 Germanic or Boreal types, as many of them on the coasts of Wales and 

 Scotland are found flourishing in stations identical with some on this 

 side of the channel, the narrow strait which severs the two islands 

 alone dividing them, and the missing species so hardy in their habits, as, 

 once introduced into this country, to have been able to stand the ordeal 

 of our mildest winters and severest springs. 



I would be inclined to look on such ferns as Cryptogramma crispa, At- 

 plenium viride, and Cystopteris fragilis, as northern species, owing to their 

 occurring rarely, or comparatively so, in this country as compiutKl with 

 England and Scotland ; the first having probably been introduced into 

 this island from England shortly previous to the severance of the coun- 

 tries, and having since then, owing to the change of climate, barely 



