This
excellent site includes Canadian distribution and shows pictures and
range maps. It is searchable by scientific or common name. I find it
useful to search by genus and compare subspecies and their occurrence in
Ontario.
http://plants.usda.gov/
Walter
Muma provides multiple photos of the same species to help with
identification. Good keys for sorting out Asters and Goldenrod. Links
to other information about native plants in Ontario
http://ontariowildflowers.com/index.php
A
lot of technical information, but good keys and illustrations. I have
used this site to key out species of sedge - the detailed drawings are
excellent.
http://www.efloras.org/flora_page.aspx?flora_id=1
PROPAGATING FROM SEED
An
excellent germination guide for all sorts of native and non-native
seeds. The Germination Guide is in the top right corner of the Home
page.
http://www.onrockgarden.com/
ORGANIZATIONS and SOCIETIES
Photos. articles, special events, resources and one of the
best annual seed exchanges on the continent. Local chapters exist in
your region too.
http://www.nargs.org/
Active
group of gardeners that organize monthly speakers, tours, workshops as
well as a seed exchange of hardy species. The group includes memebers
who are knowledgeable about native species.
http://www.ovrghs.ca/
A
group dedicated to the study and cultivation of the 100s of species
of... Penstemons. A bit specialized, but a fascinating group of Norh
American plants. Annual seed exchange and trips.
http://www.apsdev.org/