Guide to identifying native trees of the Pacific Coast region, from British Columbia to Baja California, by their leaves and needles. Organized as a dichotomous key, the book leads the user through a series of simple questions about the shape or appearance of different parts of a tree. Illustrated with line drawings. The small (6" by 4") format fits in pocket or pack to take along on a hike.
I marked this as "read", but it's not really a book for "reading". This handy little book, about 3" x 5", helps you identify native trees (and some common invasives) of the Pacific coast. It does this dichotomous-key style, which is kind of like a Choose-Your-Own-Adventure approach to identification:
If the needles are arranged in a spiral pattern, go to this symbol below. If the needles are across from each other in pairs, go to page 32.
It's not entirely comprehensive - for example, it will help you identify that a tree is a cypress, but not which of the many cypresses it is - but it is completely adequate for the casual tree-observer. It is also incredibly easy for children or adults to use, and will slip easily into the pocket of a backpack.
A very cool resource to keep in your pocket as you explore the wilderness. Helped me learn a lot about the trees in the area. Recommend using along with a more descriptive guide (this mostly is a binary model that uses specific characteristics of a tree - primarily leaf shape - to determine the tree type). A descriptive guide will allow you to confirm/reject the suggestion based on the binary model.
This is the niftiest little book ever. It leads you to the right tree by asking a series of either/or questions. Simple, concise, and fun. I'm going to keep this in my pocket forever.
My little book is (I think) the original 1963 publication titled "California Tree Finder". I used it on Girl Scout camping trips in the mid to late 70's and it was great.