218 David Moore, Ph.D., F.L.S., and A. G. More, F.L.S. 



77. Naiadacese. 



Potamogetou. 

 natans. Lmn. 

 polygon ifolius. Pom. 

 plantagincus. Ducros. 

 riTfescens. Sclirad 

 heteropliyllus. Sclirad. 

 lucens. Liun. 



perfoliatus. Linn, 

 crispus. Linn, 

 fdensus. Linn. 



pusillus. Linn, 

 pectinatiis. Linii. 



Zarmichellia, 



palustris. Linn. 

 Rnppia. 



rostellata. Kocli. 

 Zostera. Linn. 



marina. Linn. 



nana. Eotli. 



D. and W. Frequent. 

 D. and W. Boggy places.ponds, lakes, etc. 

 W. Ditclies near Miirrough of Wicklow. 

 W. IMnrrougli of WickloAv, rare (D.M.) 

 D. In the Liffey, etc. W 1 Tu the lakes ? 

 D. Phcenix Park. (Wade.) In botli 



Canals near Dublin (D.M.) 

 D. LifFey above Cliapelizod? 

 D. and W. Freqiient. 

 D. Canal at Portobello, Dublin. 



Probably conveyed by traffic from 



tlie West. 

 D. and W, Frequent. 

 D. and W. Local, abundant in the 



Canals and on Murroiigh of Wicklow. 



D. and W. Frequent. 



D. and W. Not un frequent. 



D. and W. Common. 



D. Mud-flats^ near Baldoyle. 



78. Alismacefe. 



Triglochin. 



palustre. Linn. D. and W. Frequent, 



maritimum. Linn. D. and W. Frequent in muddy salt 



marshes. 

 Sagittaria. 



f sagittifolia. Linn. D. In the Canals near Dublin, and along 



the Tolka, but probably introdixced. 

 Alisma. 



Plantago. Linn. D. and W. Frequent. 



ranunculoides. Linn. D. and W. Fi-equent in boggy places. 

 Butomus. 



jumbellatus. Linn. D. River Tolka, below Glasnevin Bridge, 



(probably escajjed.) 



7 9 . Hy d rochar idacese. 



Hydrocharis. 



Morsus-ranpe. Linn. D. Bogs of Curragha and Garristown and 

 ^ near Balruddery. 



Elodea. 



canadensis. Rich. D. and W. Plentiful in the Canals and 



streams. 



