Expert to unveil new tree guide at Powell’s

David Allen Sibley will speak at the original Powell’s Books tomorrow at 7:30 p.m. about his new Guide to Trees.

Powell’s event description: the man who revolutionized the field guide to birds now brings his formidable skills of identification and illustration to the more than 600 tree species of North America.

In his own words: “I tried to create an identification guide that would cover all of the trees in North America, native and commonly cultivated species.”

The visual guide features illustrations meticulously outlining tree details, including what twigs for a certain tree look like in different seasons.

Read Tree Curriculum to find out about other upcoming October events.