Quercus sumatrana in Sumatra

How many trees species?

When I worked in Borneo, I was fascinated by the immense diversity of trees in the jungles where I worked, even though I could only identify a few species. I did not even know how many different trees I was seeing. They look so much alike, with some exceptions, that I could walk by a […]


What, if anything, is a species? Part 1

Two trees grow next to each other in a woods in the Bluegrass region of Central Kentucky.  Can you identify them?   Are these two different species or one?  Post your answers in the comments below or on Facebook, then tune in for a discussion of these pictures tomorrow.  Over the next couple of weeks, […]