217 PRELIMINARY CATALOGUE OF PLANTS. 



Pleurotsenium, Naeg. 



P. crenulatum, Ehrb. Frequent. 

 P. truncatum, Breb. Frequent. 

 P. Trabecula, Naeg. Frequent. 

 P. clavatum, Kg. Frequent. 

 P. coronatum, Breb. Frequent. 



Tetmemorus, Ralfs. 



T. Brebissonii, Ralfs. Frequent. 



Var. turgidus, Ralfs. 

 T. granulatus, Ralfs. Frequent. 

 T. laevis, Ralfs. Frequent. 

 T. giganteus, Wood. Atsion. 



Cosmarium, Corda. 



C. amcenum, Breb. Hammonton. 



C. bioculatnm, Breb. Common. 



C. Botrytis, Menegh. Common. 



C. Biretrum, Breb. Bergen Co. 



C. Brebissonii, Menegh. Atlantic Co. 



C. caelatum, Ralfs. Frequent. 



C. conspersum, Ralfs. Frequent. 



C. crenatum, Ralfs. Frequent. 



C. cucumis, Corda. Frequent. 



C. cylindricum, Ralfs. 



C. dentatum, Wolle. Dennisville. 



C. granatum, Breb. Frequent. 



C. Hammeri, Renisch. Frequent. 



C. irregularis, Wolle. Budd's Lake. 



C. margaritiferum, Menegh. Frequent. 



C. Meneghinii, Breb. Frequent. 



Var. nanum, Wille. 

 C. moniliforme, Ralfs. Frequent. 

 C. margaritum, Wolle. Dennisville. 

 C. orbiculatum, Ralfs. Frequent. 

 O. ornatum, Ralfs. Frequent. 

 O. ovale, Ralfs. Frequent. 

 O. phaseolus, Breb. Frequent. 

 C. Porterianum, Archer. Frequent. 

 C. pyramidatum, Breb. Frequent. 

 C. sportella, Breb. Lake Hopatcong. 

 C. smolandicum, Lund. Frequent. 

 C. sublobatum, Archer. Frequent. 

 C. sexangulare, Lund. Split Rock Pond. 



