PLANTS OF RHODE ISLAND. 101 



11. fastigiata, Grev. Narragansett Bay, &c. No. 37. 



DASYA, Ag. 

 elegans, Ag. Providence to Block Island. No. .38. 



CORALLINA, Lamx. 

 oflBcinalis, L. Newport, &c. No. 40. 



MBLOBESIA, Aresch. 

 pustulata, Lamx. Narragansett Pier, Prof. Harvey. No. 41. 



LITHOTHAMNION, Phil. 

 polymorphum, (L.) Aresch. Watch Hill, Prof. Eaton. 



The following named species of Marine Algfe mentioned by Dr. 

 Farlow in his various works upon New England Algse, seem to 

 deserve insertion here, as they probably occur in our district : 



Clathrocystis rosea-persicina, Cohn. " Whole New England 



coast." 

 Isactis plana, Thuret. " Whole New England coast." 



Rhizoclonium riparium, Both. " Probably common all along 



the coast." 

 Rhizoclonium tortuosum, Kutz. "Common all along the 



Neio England coast." 

 Bryopsis plumosa, Lamx. '■'■Not uncommon all along our east- 

 am coast." 

 Desmarestia viridis, Lamx. " Common on stones." 



Sphacelaria cirrhosa, Roth. " Common on Fucus." 



Myrionema vulgare, Thur. "■Everywhere common." 



Asperococcus echinatus, Grev. " Common along the whole 



coast." 

 Porphyra leucosticta. " Probably occurs in Neio England." 

 Ceramium strictum, (Kutz.) Harv. " FVom Neto York to Cape 



Cod." 

 Rhabdonia tenera, Ag. " Common from Cape Cod southward." 

 Gelidium crinale, J. Ag. " Common in all seas." 



Polysiphonia urceolata, Grev. " Ne^o Jersey northward." 



Melobesia farinosa, Lamx. " Probably occurs throughout our 



limits." 



