I use the apps "Key to WI Woody Plants", "Texas Audubon" (they have other states, too), and "Leaf Snap" on my iPod.

I also really like the booklet "Tree Finder". http://astore.amazon.com/wilediofhou-20/detail/0912550015
-Blast
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Foraging Texas
Medicine Man Plant Co.
DrMerriwether on YouTube
Radio Call Sign: KI5BOG
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