218 DaAvip Moors, Pu.D., F.L8., Aanp A. G. Mors, F.LS. 
77. Naiadacee. 
Potamogeton. 
natans, Linn. D. and W. Frequent. 
polygonifolius. Pom. D.and W. Boggy places,ponds, lakes, etc. 
plantagineus. Ducros. W. Ditches near Murrough of Wicklow. 
rufescens. Schrad W. Murrough of Wicklow, rare (D.M.) 
heterophyllus. Schrad. D. In the Liffey, &c. W =? Jn the lakes? 
lucens. Linn. D. Phoenix Park. (Wade.) In both 
Canals near Dublin (D.M.) 
perfoliatus. Linn. D. Liffey above Chapelizod ? 
crispus. Linn. D. and W. Frequent. 
fdensus. Linn. D. Canal at Portobello, Dublin. 
Probably conveyed by traffic from 
the West. 
pusillus. Linn. D. and W. Frequent. 
pectinatus. Linn. D. and W. Local, abundant in the 
Canals andon Murrough of Wicklow. 
Zannichellia. 
palustris. Linn. D. and W. Frequent. 
Ruppia. 
rostellata. Koch. D. and W. Not unfrequent. 
Zostera. Linn. 
marina. Linn. D. and W. Common. 
nana. Roth. D. Mud-flats, near Baldoyle. 
78. Alismacee. 
Triglochin. 
palustre. Linn. D. and W. Frequent. 
maritimum, Linn, 2D. and W. Frequent in muddy salt 
marshes, 
Sagittaria. 
fsagittifolia. Linn. D. In the Canals near Dublin, and along 
the Tolka, but probably introduced. 
Alisma. 
Plantago. Linn. D. and W. Frequent. 
ranunculoides. Linn. D. and W. Frequent in boggy places. 
Butomus. 
tumbellatus, Linn, D. River Tolka, below Glasnevin Bridge, 
(probably escaped. ) 
79. Hydrocharidaceee. 
Hydrocharis. 
Morsus-rane. Linn. D. Bogs of Curragha and Garristown and 
near Balruddery. 
Elodea. 
canadensis. Rich. D. and W. Plentiful in the Canals and 
streams. 
