18 Proceedings of the Royal Irish Academy. 



Polygonum persicaria (Linn.) — Common. 



P. ampJiibium (Linn.) — Plentiful in many places. All varieties occur 

 between the form floating in deep water and that growing on 

 dry banks next the shore. 

 "P. listorta (Linn.) — In a damp meadow, near the avenue at Ely 

 Lodge ; probably escaped from some garden. 



\_P. lapatliifolium (Linn.) — On comparing a specimen considered to 

 be this species with others in the British Museum, it proves to 

 be only a luxuriant form of P. persicaria ; but the true plant is 

 likely to occur in boggy, cultivated fields near the lake.] 



EuPHOEBIACE^. 



PJuphorlia helioscopia (Linn.) — In fields at the east side of the lower 

 lake, &c. 



Ueticace^. 



TJrtica dioica (Linn.) — Common. 



U. urens (Linn.) — At Belturbet, and probably in waste ground else- 

 where. 

 ^Ulmus suherosa (Ehi'h.) — At Ely Lodge, and Crum Castle, &c. 

 Planted. 



AilEXTrFEE^. 



Qiiercus rohur (Linn.) — Planted in many places, and native in other 

 localities. 

 ^Fagus sylvatica (Linn.) — Planted about Ely Lodge, &c. 



Coryhis avellana (Linn.) — Common. 



Alnus glutmosa {Jjiiin.) — Common, generally. 



Betula alba (Linn.) — Ely Lodge, &c. Erequent. 



Myrica gale (Linn.) — Common. 

 ^Populus treimda (Linn.) — Shores of lower lake. 



^Salix viminalis (Linn) — Roadside from Pollaphuca to Blaney Bay. 

 Perhaps planted. 



S. cinerea (Linn.) — White Island, &c. Frequent. 



S. aurita (Linn.) — Owl Island, &c. 



S. oaprea (Linn.) — "White Island, &c. 



S. repens (Linn.) — Owl Island. 



CONIFEE^. 



*Pinus sylvestris (Linn.) — Planted in many places. 



Typhace^. 



Typha latifolia (Linn.) — Rare. Only seen in a ditch near Castle 



Hume. 

 Sparganium ramosum (Huds.) — Near Blaney Bay, &c. Common. 



