268 The Ohio Naturalist. [Vol. V, No. 3, 



BRUSH LAKE ALGAE. 



LuMiNA C. Riddle. 



The following list of Algae was identified from material col- 

 lected at Brush Lake, Champaign Co., O., during the Fall of 1902. 

 In addition to the species included in the lists published by Dr. 

 Kellerman in his "Proposed Algological Survey of Ohio," Ohio 

 Nat. 2:219-223; by A. J. Pieters in "Plants of Western Lake 

 Erie;" Bull. U. S. Fish Comm. 1901; 57-79; Juha W. Snow, 

 "Plankton Alg^ of Lake Erie;" Bull. U. S. Fish Comm. 1902; 

 369-394; and in the writers' list of "Algae from Sandusky Bay," 

 Ohio Nat. 3: 317, there were found seven new species for the 

 state. These are indicated by the letter "n" after the name. 

 The nomenclature is that used in DeToni Sylloge Algarum. 



RHODOBACTERIACE.'E. 



Thiocystis violaceas Weinogradsky. n. 



BEGGIATOACE^. 



Beggiatoa alba(Vaucher) Trevisson. 



CHROOCOCCACE.-E. 



Chroococcus turgidus Kuetz. & Merismopedia glauca (Ehrenb( Naeg. 



Nseg. n. Merismopedia convoluta Breb. 



Gomphosphseria aponina Kuetz. 



OSCILLATORIACE.-E. 



Oscillatoria froelichii Kg. Oscillatoria liniosa Ag. 



Oscillatoria elegans Ag. Microcoleus lacustris (Rabenh) Far- 



low, n. 



NOSTOCACE.-E. 



Nodularia spuinigena Martens. i\nab;ena flos-aquae Breb. 



TETRASPORACE..E. 



Botryococcus braunii Kuetz. 



CLADOPHORACE^. 



Cladophora declinata fluitans( Kuetz) Hansg. 



VOLVOCACE.'E. 



Pandorina moruin (Muell) Bory. Spondylomorum quatemarium 



Eiirenb. 



PLEUROCOCCACE.^. 



Rhapidium acicularc (A Br) Scenedesmus bijugatus (Turp)Kuetz^ 

 Rabenh. " quadricauda(Turp) Breb.. 



Rhapidium convolutum (Corda) Tetraedron enorme(NcEg) Hansg. 

 Rabenh. 



SORASTRACE^. 



Coelastrum microporum Na;g. Cttlastruni cambricum Archer. 



HYDRODICTYACE.^. 



Pedias+rum boryanum(Turp) Pediastrum tetras (Ehrenb) Ralfs. 



Menegh. 



