Stewart — On the Botany of Lough Allen. 439 



Molinia cffirulea (Moench.) — Very luxuriant, by the lough. 



Poa anaua (Linn.) — Roadsides ; common. 



P. trivialis (Linn.) — Pastures. 



P. pratensis (Linn.) — Frequent. 



Glyceria fluitans (P. Br.) — Ditches ; common. 



Catabrosa aquatica (Beauv.) — West of Drumshambo ; rare. 



Cynosurus cristatus (Linn.) — Common. 



Dactylis glomerata (Linn.) — Common. 



Pestuca I'ubra (Linn.) — Common. 



P. elatior (Linn.) — By the lough. 



P. pratensis (Huds.) — In wet places by the lough. 



Bromus racemosus (Timm.) — Drumshambo and Arigna; rare. 



Lolium perenne (Linn.) — Common. 



Eqtjisetace^. 



Equisetum arvense (Linn.) — Common. 



E. maximum (Lamk.) — Not common. 



E. sylvaticum (Linn.) — By the lough; also on Slieveanieria, at 1600 



feet ; rare. 

 E. limosum (Linn.) — Common. 

 E. palustre (Linn.) — Common. 



PiLICES. 



Polypodium vulgare (Linn.) — Prequent, but not abundant. 



Lastrea filix-mas (Presl.) — Common; ascends to 1600 feet. 



L. dilatata (Desv.) — Common; ascends to 1700 feet. 



Polystichum angulare (Willd.) — Common. 



Cystopteris fragilis (Bernh.) — Walls of old iron works at Arigna; very 



rare. 

 Athyrium filix-foemina (Bernh.) — Common; very fine, at 1600 feet. 

 Asplenium adiantum- nigrum (Linn.) — Walls of old works at Arigna; 



also at 1600 feet on Slieveanierin ; rare. 

 A. trichomanes (Linn.) — Walls of Arigna, and by the Stony Piver, 



Slieveanierin. 

 A. ruta-muraria (Linn.) — Abundant on the old Shannon-bridge at 



Ballantra, and near the Drumkeeran coal-pits ; rare. 

 Scolopendrium vulgare (Sm.) — Common. 

 Blechnum boreale (Sw.) — Common; ascends to 1600 feet. 

 Pteris aquilina (Linn). — Common. 

 Hymenophyllum unilaterale (Willd.) — Sandstone cliffs, Slievenakilla, 



at 1500 feet; Slieveanierin, at 1800 feet; counties Cavan and 



Leitrim ; very rare. 



Lycopodiace^. 



Isoetcs lacustris (Linn.) — South end of the lough ; very rare. 

 Lycopodium selago (Linn.) — Prequent on the mountains. 



