512 Proceedings of the Royal Irish Academy. 



Lemnace^. 

 Lemna trisulca, Linn. — In the river near Sligo. 



Naiad ACE^. 

 Potamogeton natans, Linn. — In the river near Sligo. 



n polygonifoUus, Pour. 1500 feet. — Bogs on mountains, 



&c. Not common. 

 [ ,, rufescens, Schrad. — In Corry's List, and marked in his 



London Catalogue as found in the river at Sligo, but 

 not seen there by us. Corry omits P. %izii, which is 

 abundant in the same locality.] 



,, heterojyhyllus, Schreb. — Glenade lake. 



,, pusillus, Linn. — Glenade lake. 



,, flahellatus, Bab. — Glencar lake. 



,, %i%ii, Mertens and Koch. — In the river at Sligo, and 



Glenade lake. I^amed by Mr. Arthur Bennett, who 

 observes — " The Lough Gill plant represents one 

 form, and the Glenade plant another, neither being 

 the typical plant of Mertens and Koch." 



Alismace^. 

 Triglochin palustre, Linn. 1100 feet. — Common. 

 Sagittaria sagitifoUa, Linn. — Young state, with submerged linear 



pellucid leaves, in the river at Sligo. 

 Alisma plantago, Linn. — Shore of Lough Gill, near Sligo. 

 ,, ranunculoides, Linn. — Shore of Lough Gill, near Sligo. 



Htdeochahidace^ . 

 *Elodea canadensis^ Wick. — Lough Gill river. 



Oechidaceje. 

 Orchis mascula, Linn. — Not common. 

 ,, incarnata, Linn. — Glenade, sparingly. 



,, maculata, Linn. 2100. — Yery common everywhere, from the 

 sea level to the top of Trusk. 

 Gymnadenia conopsea, Brown. — Glencar. In many places, but not a 



common plant. 

 Saienaria alhida, Rich. — Base of Ben Whisken very sparingly, and 

 on talus of King's Mountain ; common in one place. 

 ,, viridis, Brown. — Glenade, Goat Island, and Lough Gill, 



&c. ; frequent. 

 ,, lifolia, Bab. — Nowhere plentiful, but met with in nearly 



every part of the district. 

 ,, chlorantha, Bab. — Common. 



Listera cordata, Brown. 2000 feet. — Frequent on the mountains. 



,, ovata, Brown. — Common. 

 PJpipactis latifolia, Auct. — Shore of Lough Gill, near Sligo. 



