DANN NM MN 
wm 
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CATALOGUE OF PLANTS. 
. brevispinum, Breb. 
. Dickiei, Ralfs. 
. aristiferum, Ralfs. 
. cuspidatum, Breb. 
. trifidum, Nordst. 
. Avicula, Breb. 
All these species frequent or occasional in ponds. 
. brachiatum, Ralfs. 
Burlington: Brown’s Mills, and Ocean: Bamber. 
. Bieneanum, Rab., var. ellipticum, Wolle. 
Frequent in ponds. 
. inconspicuum, Nordst. 
Same habitat. 
. pseudopachyrhynchum, Wolle. 
Monmouth: Pond at Spring Lake. 
. Margaritaceum, Ehbrb. 
. striolatum, Neg. 
. tricorne, Breb. 
. polymorphum, Breb. 
. crenulatum (Neg.), Delp. 
. muricatum, Breb. 
. asperum, Breb. 
. rugulosum, Breb. 
. punctulatum, Breb. 
pygmeum, Breb. 
alternans, Breb. 
. dilatatum, Ehrb. 
cyrtocerum, Breb. 
. paradoxum, Meyen. 
. arachne, Ralfs. 
- comptum, Wolle. 
All frequent in ponds. 
. elongatum, Barker, var. tetragonum, Wolle. 
Burlington: Pond at Brown’s Mills. 
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