578 Proceedings of the Royal Irish Academy. 



C. stricta, Good. Plentiful by the Erne river. This has been 

 named by Mr. A. Bennett. 



C. pcdlescens, Linn. By the Termon river, above Pettigo. 



C. vulgaris, var. goodenovii, Gay. Slieve League. An alpine form. 



C. strigosa, Huds. Amongst thickets on the island immediately below 

 Cltffi, in the Erne river. 



C.filiformis, Linn. Stream leading out of Sheskinmore Lake, north- 

 west of Ardara ; lake near Cliff. 



C. vesicaria, Linn. Brown Hall ; Termon river, Pettigo. 



Phleum arenarium, Linn. Sand-hills, north-west of Ardara. 



Sesleria cceridea, Scop. By the Termon river, above Pettigo. 



Catalrosa aquatica, Beauv. "VYet places in sand-hills north-east of 



Ardara. 

 Triticum caninum, Linn. By the Termon river, above Pettigo. 

 XLolium temulentum, Linn. Cliff, near Belleek. 



Cryptogramme crispa, E. Br. Very sparingly on Alt Mountain, near 

 Ardara. The parsley fern has not been previously found in 

 Donegal. Mr. Arthur Brooke, of Killybegs, was with me when 

 I discovered it, and he alone (besides myself) knows the exact 

 locality. 



Polypodium phegopteris, Linn. Alt Mountain, near Ardara ; above 

 Lough Pinn ; woods by the coast between Slieve-a-Tooey and 

 Magheragh. 



Lastroea tlielypteris, Presl. Limestone shingly places, near the Eiver 

 Erne, on the right bank immediately below Belleek. This is a 

 distinct locality from my friend A. G. More's for the same species, 

 which is near Ballyshannon, along the same river. A very local 

 fern. 



Polystichum acideatwn, Both., and P. angidare, !N^ewm. By the Erne, 

 opposite Cliff. 



Cystopteris fragilis, Bernh. On a bridge over the Termon river, above 

 Pettigo ; Alt Mountain, near Ardara ; rivers above Laghy, at 

 Moynalt, &c. 



\_Asp)lenium viride, Huds. Banagher mountain, above Lough Eske. 

 Miss Sinclair informs me that her brother found this fern there.] 



Ceterach officinarum, Willd. Walls of outhouses, &c., at Brown Hall ; 

 abundant. Yery rare in Donegal, occurring in but one other 

 locality. Mr. AUingham records it elsewhere near Belleek, but 

 on searching the locality I fear it has disappeared. 



BotrycTiium lunaria, Linn. Templecam, near Pettigo — Miss Young. 

 At Gweedore — P. Mahony. 



