114 PLANTS OF RHODE ISLAND. 
—_ 
Se SS 
Sus-OrpDER CYANOYHPYCE. 
Nostocacee. 
MASTIGONEMA, (Fisher,) Kirch. 
eeruginosum, (Kg.) Kirch. Easton’s Pond, Newport, &c. 
GLOEOTRICHIA, Ag. 
natans, Thur. Prof. J. W. Baiiey, sub Rivulariad angulosa, 
Roth. 
RIVULARIA, Kg. 
dura, Kg. Not uncommon. 
SCYTONEMA, Ag. 
natans, Breb. Quidnessett, &c. 
gracile, Kg. N. Providence. 
TORY POTHRI2A: Bs 
distorta, Kg. Worden’s Pond, Prof. J. W. Bailey. No. 111. 
SIROSIPHON, Kg. 
pulvinatus, Breb. Pocasset Brook. 
ocellatus, Kg. Quidnessett. 
HAPALOSIPHON, Naegr. 
fuscescens, Kg. Spectacle Pond. 
tenuissimus, Grun. Blackamore Pond. 
NOSTOC, Vauch. 
commune, Vauch. Common. 
spheericum, Vauch. Providence. 
rupestre, Kg. Providence. 
ANABANA, Bory. 
flos-aque, Kg. Very common. 
gigantea, Wood. Providence, Mr. Lathrop ; R. W. Park. 
oscillarioides, Bory. Roger Williams Park. 
SPHAROZYGA, (Ag.) Ralfs. 
polysperma, Kg. Spectacle Pond, &e, 
LYNGBYA,* Ag. et Thuret. 
obscura, Kg. Pocasset. 
vulgaris, (Kg.) Kirch. Very common. 
Retzii, (Ag.) Kg. Geneva. 
interrupta, (Kg.) Neutakonkanut. 
inundata, (Kg.) Geneva. 
W ollei, Farlow. Providence, &c. 
* See also under Marine Alga, p. 94. 
