PLANTS OF GEORGIAN BAY .207 



SESSIONAL PAPER No. 39b 



St. ophiura Lund. var. tetracerum Wolle. 



St. " " " pentacerum « 



St. odonatum, Wolle. 



Euastrum elegans Kg. 



E. magnificum Wolle. 



E, ventiicosum Lund. 



Micrasterias furcate (Ag) Ralfs. 



M. pseudo-furcata, var. Minor (?) Wolle. 



M. lanticeps, Nord. common. 



M. crux Melitensis (Ehrb) Hass. 

 Diatomaceae 



Acnanthes exilis Kg. 



Asterionella formosa var. gracillima, V.H. 



In surface plankton in steamer channel at entrance to the Bay. 



Amphora ovalis Kg. 



Cocconema lanceolatum Ehrb. 



Cosinodiscus lanceolatum Ehrb. 



Cosinodiscus plentiful in, and characteristic of dredged material from east- 

 edge of sand beach Giant's Tomb. 



C. lacustris, from inner bay. 



Craspedodiscus microdiscus Ehrb. (?) 



Denticula lauta Bail. 



Encyonema gracile Rab. 



Epithemia turgida Kg. 



E. argus Kg. 



Fragilaria — Ribbons of acute-pointed individuals frequent in scrapings from 

 submerged rocks and in floating plankton in steamer channel. 



Gonphonema geminata Ag. 



Melosira granulata Bail. 



Navicula viridis. Kg. 



In ribbons of 100 individuals among decaying Zygnema. 



Stauroneis Phoenocenteron Ehrb. 



Surirella elegans Ehrb. 



Synedra ulna var. splendens. 



Tabellaria fenestrata (Lyng) Kg. 



T. flocculosa (Roth) Kg. 



Terpsinoe Musica Ehrb. 



Through the kindness of Mr. C. S. Boyer, of Philadelphia, one of the 

 authorities on Diatoms, I am able to add the following, identified from the 

 material I collected in the immediate vicinity of Go Home Bay: — 



Amphora ovalis (Br6b) Kiitz. 



Anomoeoneis serians Br^b. 



CycloteUa striata Kiitz. 



Cymbella cuspidata Kiitz. 



