NATURAL HISTORY, TORONTO REGION 



CHLOROPHYCEAE Green Algae. 



Order Confervales (Heterocontae). 



Family Botrydiaceae. 



Botrydmm granulatum, Grev.* Don Valley. 



Order Conjugates. 



Family Desmidiaceae. 



Fifty-six species are listed by Mackenzie all 

 from Ashbridge's Bay, High Park, Don Valley and 

 Hurnber Valley. The genera represented are: 

 Hyalotheca (1 species), Desmidium (1), Penium 

 (2), Clostermm (12), Docidium (2), Oalocylindrus 

 (2), Cosmarium (19), Xanthidium (2), Arthrodes- 

 nms (1), Euastmm (2), Micrasterias (1), Staura- 

 stram (11). 



Family Zygnemaceae. 



Zygnema pectinatum, var. anomalum, Kirch. 

 Spirogyra flavescens, Cleve. 



" longata, Kg. 



" nitida, Link. 



" jugalis, Kg. 



" orthospira, Kg. 



" quadrata, Petit. 



Family Mesocarpaceae. 



Mongeotia genuflexa, Agardh. 

 Order Volvocales. 



Family Chlamydomonadaceae. 

 Chlamydomonas undetermined species. 

 Haematococcus pluvialis, Agardh. 

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