Trees, Shrubs and Conifers: Mystery Tree, 1 by ViburnumValley

ViburnumValley wrote:
Hunting around my shelves since I typed that - glad you asked!

Woody Plants in Winter by Core and Ammons (The Boxwood Press, 1958) is an old standard.

How to Identify Plants by Harrington and Durrell (Swallow Press, 1957) is another really good text that describes all those great plant part terms, as well as other stuff.

These are probably available very inexpensively online - and there are likely plenty of online keys/information too, but those would be hard to take out in the yard or the woods.

Here's what those books look like...pardon the clear evidence of excessive use.