A modern (holistic) approach to Tree Identification

Through this fall I’ve been talking about what I tried to accomplish in my new Guide to Trees. In essence, I tried to approach tree identification in the same way that modern birders approach bird identification, to create “a tree guide for birdwatchers”. Most guides to tree identification use keys at some level, which are …

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Trees with opposite leaves

In the past, tree identification guides have emphasized the presence of opposite leaves as one of the most important field marks. In the Sibley Guide to Trees I used a more holistic approach, like modern bird identification, giving equal weight to all parts of the tree. A tree might catch your attention because of its …

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My latest project

After seven years of work, my new Guide to Trees goes on sale officially on September 15th (but those who live near Philadelphia can get it as early as Saturday the 12th when I’m there for book-signings). I’ll be traveling quite a bit this fall to book-signings across the US and Canada, doing a variety …

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