Sources Select Resources Encyclopedia
Ferns - a Different Sort of Plant
Ferns are among the more beautiful of plants, which makes them a pleasure to study, and there are really not that many different varieties; only about a hundred in all of Ontario.
The Natural History of Ontario
Theberge, John B.
A comprehensive, extensively illustrated natural history of Ontario, covering bedrock, soils, birds, mammals, insects, wildflowers, forests, prehistoric life, and much more.