The following links are provided for the use of exhibition entrants in order to facilitate compliance with the native-Canadian requirement. Their use is not mandatory and they’re not being offered as all-encompassing or the last word on native Canadian plants. Suggestions of additional resources for listing here are welcome.
Vascular Plants of Canada (VASCAN)
This site provides accepted species and common names as well as a map view of where the plant is found in Canada.
USDA Plants Database
This site includes vascular plants, mosses, liverworts, and lichens of the USA and Canada. For the Canadian species it is colour-coded as to “native” and “introduced”. Many of the plants have detailed fact sheets and plant guides. The “state search filter” includes Canadian provinces.