The 3 most recommended plant ID books, here in Ontario, are:
A Field Guide to Wildflowers, Roger Tory Peterson/ Margaret McKenny, Houghton Mifflin, 1968, ISBN# 0-395-183251
National Audubon Society Field Guide to North American Wildflowers - Eastern, Wm. A. Niering/Nancy C. Olmstead, Alfred A. Knopf, 1995, ISBN#
0-394-50432-1 (this is the one Rescue Riley mentioned)
Newcomb's Wildflower Guide, Lawrence Newcomb, Little Brown & Co., 1977, ISBN# 0-316-60442-9
The last one is probably most often recommended as it has a unique keying system to help identify the plants.
As for trees, the gold standard has been:
Trees in Canada, John Laird Farrar, Fitzhenry & Whiteside, 1995, ISBN#
1-55041-199-3
But recently, I received a relatively new ID book for trees that looks excellent - tons of colour prints, natural range coverage etc. I haven't used it much, yet, but looking through it suggests if you only buy one, this is probably it:
Identifying Trees, Williams, Stackpole, 2007, ISBN# 13: 978-0-8117-3360-1
If anybody disagrees with this list or has better suggestions, please post.
As for:
Would be great if they also included tips on each species' uses for fire, food, medicine, shelter, etc. Thanks! William
Lots of luck with that. Usually, books that identify usage have very poor ID information, if any at all.
Doc