207 PRELIMINARY CATALOGUE OF PLANTS. 



Callithamnion, Lyngb. 

 C. tetragonum, Ag. 

 C. Baileyi, Harv. 

 C. Borreri, Ag. 

 C. polyspermism, Ag. 

 C. byssoideum, Arn. 

 C. Dietzise, Hooper. 

 C. corymbosum, Ag. 

 C. versicolor, Ag. 

 C. plumula, Lyngb. 

 O. Americanum, Harv. 

 C. cruciatum, Ag. 

 C. Turneri, Ag. 



MELANOSPORjE. 



Sargassum, Ag. 

 S. vulgare, Ag. 



Pucus, L. 



P. nodosus, L. "Rockweed." 

 P. vesiculosus, L. "Rockweed." 



Laminaria, Lam. 



L. saccarhina, Lam. " Kelp." 



Stilophora, Ag. 

 S. rhizodes, Ag. 

 S. papillosa, Ag. 



Striaria, Grev. 



S. attenuata, Grev. 



Chorda, Lam. 



C. filum, Stack. 



Chordaria, Ag. 



C. flagelliformis, Ag. 

 C. divaricata, Ag. 



Castagnea, Thuret. 

 C. virescens, Thuret. 

 C. Zosterse, Thuret. 



Leathesia, Gray. 



L. tuberformis, Gray. 



