CATALOGUE OF PLANTS. 



129 



Z. insigne, Kuetz. 



M, Cascade ; near Spot Pond. 

 Z. stellinum, Ag. 



M, swamp near Bear's Den path. 



SPIROGYRA, Link. 

 S. bellis (Hass.), Cleve. 



B B, in pond. 

 S. calospora, Cleve. 



M, rather common. 

 S. catenasformis (Hass.), Kuetz. 



M, Spot Pond brook, Virginia Wood. 

 S. crassa, Kuetz. 



B B, in pond and brook. 

 S. Grevilleana (Hass.), Kuetz. 



M, swamps near Highland Ave., Medford. 

 S. inflata (Vauch.), Rab. 



M, swamp near Bear's Den. 

 S. insignis (Hass.), Kuetz., var. Hantzschii (Rab.), "Petit. 



M, brook, Virginia Wood : — BB, in pond. 

 S. orthospira (Naeg.), Kuetz. 



M, brook, Virginia Wood. 

 S. quadrata (Hass.), Petit. 



M, Melrose. 

 S. Spreeiana, Rab. 



M, Virginia Wood ; Pine Hill. 

 S. varians (Hass.), Kuetz. 



B B, in pond. 



ZYGOGONIUM, Kuetz. 

 Z. ericetorum, De Bary. 

 M, Pine Hill. 



MOUGEOTIA, Ag. 

 M. mirabilis (A. Br.), Wittr. 



