CATALOGUE OF PLANTS. 459 
. Molleriana, Grun. 
Fresh or brackish water. Monmouth: Fresh-water ditches 
near Shark River and Lake Como. Atlantic: Brackish pools 
near Absecon. 
. ovalis, Breb. 
Fresh or brackish water. Monmouth: Common in ditches 
running into Lake Como and Shark River. Atlantic: Brackish 
ditches near Absecon. Cape May: Cape May and Dennisville. 
. ovata, Kiitz. 
Fresh water. Common in ponds and ditches. Burlington: 
Marlton. Camden: Kirkwood. Occasional in Camden water- 
supply. Salem: Woodstown. Gloucester: Mullica Hill. 
. pinnata, W. Sm. 
Fresh water. Sussex: Common in springs and ditches at 
Andover and Culver’s Gap. 
. Salina, W. Sm. 
Marine. Generally distributed—Lewis. 
. splendida, Ehrb. 
Fresh water. Common in meadow pools and ditches. 
. Striatula, Turp. 
Salt or brackish water. Monmouth: Common in the mud of 
brackish ditches near the mouth of Manasquan River; mud of 
ditches near the mouth of Shark River. Atlantic: Meadow 
pools near Atlantic City. Cape May: Cape May, and mud of 
Dennis Creek. 
. tenera, Greg. : 
Fresh water. Gloucester: Occasional in pond at Mullica 
Hill. Camden: In Camden water-supply. 
CAMPYLODISCUS, Ehrb. 
. costatus, W. Sm. 1 
Camden: Rare in Delaware River mud—Lewis. 
. eribrosus, W. Sm. . 
Salt or brackish water. Monmouth: Ocean Beach clay; mud 
of brackish ditches near the mouth of Manasquan River. Blue 
clay of the Delaware River at Philadelphia—Lewis. 
