Do most tree trunks look alike to you? Do you have trouble identifying trees without their leaves, or even with their leaves? Would you like to be able to identify tree species in winter, when the buds that would give you a clue may be too high to see well?

Or would you just like a peaceful, non-controversial event that has nothing to do with the charter?

Tomorrow evening, Monday, November 20, 7pm at the Senior Center, the Newton Tree Conservancy, Newton Conservators and Green Newton are co-sponsoring a talk by Michael Wojtech, who literally wrote a book on bark. He’ll explain his system for identifying trees of the Northeast by their bark. You’ll also learn why trees have different kinds of bark, why it changes as tree age, and why some barks peel.

In case you thought all bark looks the same, and just for a challenge, I’ve put together this collage of twelve different species, all in Newton. Be the first person to guess them all correctly (left to right, top row, bottom row) and you’ll win a Newton Tree Conservancy tee shirt. Hint: eight are fairly common street or park trees, three are less common native species, and one is a non-native used as a street tree. And none are Norway maple!