436 Proceedings of the Royal Irish Academy. 



E. acetosa (Lion.) — Common. 



B,. acetosella (Linn.) — Common. 



Polygonum amphibium (Linn.) — Around the lougli. 



P. lapathifolium (Linn.) — Xear the lough, occasionally. 



P. persicaria (Linn.) — Common. 



P. hydropiper (Linn.) — Common around the lough. 



P. aviculare (Linn.) — Slieveanierin. 



P. conyolvulus (Linn..) — Drumshambo ; not common. 



Empetrom nigrum (Linn.) — On the mountains. 



C ALLITEICHACE^ . 



Callitriche vema (Linn.) — Common; rises to 1600 feet on SHevena- 

 killa. 



Ueticaci:^. 



Urtica dioica (Linn.) — Common. 



IT. urens (Linn.) — By Carrickaport Lake; not common. 



AiEEi'irFEE^. 



Salix pentandra (Linn.) — jS'ear Drumkeerin ; rare. 



S. alba (Linn.) — By the lough side ; not common. 



S. purpurea (Linn.) — Drumshambo ; rare. 



S. cinerea (Linn.) — Common. 



S. aurita (Linn.) — Common; occurs at 1600 feet on the mountains. 



S. caprea (Linn.) — Around the lough. 



Myrica gale (Linn.) — Heath on the west side of the lough 



Corylus avellana (Linn.) — i!^ot common. 



Alnus glutinosa (Graert.) — Around the lough. 



Hydeochabidace^. 

 Anacharis alsinastrum (Bab.) — In Lough Allen. 



OECHIDACEiE. 



Orchis maculata (Linn.) — In great abundance everywhere. 

 Habenaria viridis (Pt. Br.) — East of Drumshambo ; two specimens only 



seen ; but very luxuriant. 

 H. bifolia (R. Br.) — Drumshambo, Dowra, and Shannon Pot; fi'e- 



quent. 

 H. chlorantha (Bab.) — Common in damp pastui-es throughout the 



district. 

 Listera cordata (P. Br.) — Sparingly, at and above 1600 feet on 



SUeveanierin and Slievenakilla. 



