90 DUBLIN NATURAL HISTOKT SOCIETY. 



mens. One thing, however, seems to me certain — the hanging together 

 of the fronds in the manner sliown did not indicate longitudinal self- 

 fission after the mode in Ankistrodesmus ; for, in the same gathering, 

 dividing fronds occurred after the manner normal and generic in this 

 and other species of Closterium (Figs. 61, 62), and the combined fronds 

 were all mature and fully grown, and were quite specifically charac- 

 teristic. 



ON A NEW LOCALITY EOE POLYPODIUM PHEGOPTEEIS, WITH A LIST OP THE 

 FEENS OCCUEEING IN THE DISTEICT COMPEISED IN THAT PAET OE SHEET 

 125 OP THE OEDNANCE INCH MAPS OF lEELAND THAT LIES TO THE WEST 

 OF LOUGH DEEG, AND THE SOUTH-EAST OF SHEET I 24. COMMUNICATED 

 BY ME. G. HENEY KINAHAN, G. S, I. 



[Read December 6, 1861.] 



I BEG to call the attention of your Society to a new locality for that rare 

 fern P. Phegopteris. It is situated in Glendree, county of Clare (sheet 

 '4'). On the outcrop of the old red sandstone, near the crest of the 

 hill, are numerous blocks of sandstone, under one of which, with an 

 eastern aspect, there is a small boggy cave, if I may so call it, about 

 two yards long, one deep, and two feet high ; this was filled with 

 Phegopteris, growing most luxuriantly. This is the only station it 

 seems to occur in, as I searched all about most carefully, without find- 

 ing another station. 



I append a list of ferns remarked, during last summer and autumn, 

 in that part of the Sheet 125 of the Inch Map of Ireland that lies on 

 the west of Lough Derg, and in the south-east part of Sheet 124 : — 



Polypodium vulgare. — Found everywhere. 



P. phegopteris. — Glendree, Clare, Sheet ^f . 



Polystichum aculeatum. — Two miles south-east of Eeakle, and at Curragh- 

 clune-arthur. 



Var. lohatum. — "Woodpark woods, Galway, Sheet 136; Woodford 

 woods, Galway, 131 and 132; and in various places in Slieve-aughta. 

 The variety P. lonchitidoides grows very luxuriantly, about a mile 

 IS". ]S[. "W. of Woodford, on the old road from Woodford to Lough 

 Rea. 



P. angular e. — Woodpark and Woodford, abundantly and luxuriantly ; 

 and other localities sparingly ; two or three varieties. 



Lastrea montana. — Very abundant in the glen about Peakle, &c. 



L.filix mas — Very common; three or four varieties remarked. 



L. dilatata. — Very common ; three or four varieties. 



L. fcenesecii. — Very plenty at Woodpai-k and Woodford ; also among 

 the hills, sparingly ; abundant at Caher, Loughgraney. 



Athyriumfilix fonmina. — Very common; five or six varieties. 



Asplenium ruta muraria. — Very abundant in the limestone country 

 bounding Lough Derg on the west ; a few plants remarked at Wood- 

 park ; very plenty on the ruins on Inishcaltra. 



