96 Proceedings of the Royal Irish Academy. 



POTAMOGEIOIS'ACE^ . 



Potamogeton natans (Linn.) — In lakes and ditches; profusely abun- 

 dant. 



P. polygonifolius (Pourr.) — Marshes and drains ; common, especially 

 on the elevated plateau at the west end. 



P. heterophyllus (Schreb.), yar. pseudo-nitens (A. Bennett). — Very 

 rare. I found one specimen only in Ushet lake. 



P. prffilongus (Wulf.) — Plentiful in the deep water of the large lake 

 at TJshet. 



P. perfoliatus (Linn.) — With the preceding ; in some quantity. 



P. crispus (Linn.) — Ushet lake; rare. 



P, pusillus (Linn.) — Lakes at the south end. I found only the variety 

 tenuissimus, which is the common form in the north of Ireland. 



Ctpeeaceje. 



Schoenus nigricans (Linn.) — "Wet margins of lakes; rare. 



Eleocharis palustris (R. Br.) — Ditches and lakes; common. 



Scirpus pauciflorus (Lightf.) — Wet moors at the west end ; not 

 common. 



S. fluitans (Linn.) — Lakes, ponds, and drains; in profusion every- 

 where. 



S. setaceus (Linn.) — "Wet places ; rare. 



S. savii (S. and IT.) — Frequent on boggy ground. 



Eriophorum polystachion (Linn.) — Common on boggy ground. 



Carex dioica (Linn.) — Kenramer ; rare. 



C. pulicaris (Linn.) — Frequent. 



C. vulpina (Linn.) — Ushet; rare. 



C. stellulata (Good.) — Common. 



C. vulgaris (Fries.) — Margins of lakes; not common. 



C. panicea (Linn.) — Rare and small. 



C. pilulifera (Lian.) — Rare and stunted. 



C. glauca (Scop.) — Common. 



C. flava (Linn.) — Common. 



C. hornschuchiana (Hoppe.) — Frequent on the moors. 



C. distans (Linn.) — Shore near Ushet; rare. 



C. binervis (Sm.) — Keni'amer; very rare. 



C. hirta (Linn.) — Margin of Ushet lake; rare. 



C. ampuliacea (Good.) — Lakes and ponds; frequent. 



Gk AMINES. 



Anthoxanthum odoratum (Linn.) — Not common. 

 Phleum pratense (Linn.) — jS^ot common. 

 Alopecurus pratensis (Linn.) — Rare. 

 A geniculatus (Linn.) — "Wet places ; frequent. 

 Nardus stricta (Linn.) — Moors ; not common. 



