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NATURAL HISTORY, TORONTO REGION Order Ulotrichales.

Family Ulotrichaceae.

Ulothrix zonata, Aresch.

Family Oedogoniaceae.

Oedogonium crassiusculum, Wittr.

Bulbochaete intermedia, DeBary.

,,

gigantea, Pringsh.

Family Chaetophoraceae. Chaetophora incrassata, Hazen.

,,

elegans, Agardh.* In pools at Lorne

Park.

Stigeoclonium nanum, Kiitz. (?)

Draparnaldia glomerata, Agardh.

Pleurococcus vulgaris, Men. Constitutes the green coating on tree trunks, damp walls, etc., everywhere.

Gloeocystis fenestralis, A. Braun.* In greenhouse. Chaetosphaeridium globosum, Klebahn.

Family Coleochaetaceae.

Coleochaete scutata, Breb. On under surface of lily pads, etc.

Order Siphonales.

Family Vaucheriaceae.

Vaucheria dillwynii, Ag.

"   ornithocephala, Ag.

"   sessilis, D.C.

"   geminata, D.C.

"   terrestris, D.C.* 178


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