Oak trees are stately trees that can live for hundreds of years. These are the most common types of native oak trees that ...

While walking around our property this week, I came across two interesting things going on with our pin oak trees. The first thing that caught my eye was what looked like a white grape growing from an ...

So said the eminent Harvard botanist Asa Gray, on page 451 in his encyclopedic “Lessons in Botany and Vegetable Physiology,” a book published in 1872. I got my copy at an old bookstore several years ...

A study in Forest Ecosystems reveals that two closely related evergreen oaks (Quercus aquifolioides and Quercus spinosa) in ...

Rotational-fit methods were used to examine shape variation in oak leaf morphology by reference to a set of 14 landmarks for each leaf. Within-tree, between-tree, and between-species variations were ...

Maybe we should have had the Turkey oak, Quercus laevis, back at Thanksgiving: some people think that the leaves of this little tree resemble a turkey’s foot, which for me would require a good bit of ...

Northern red oaks, quercus rubra, are, to me, the cardinals of the oak world: easy to identify. These are beautiful majestic oak trees with rough, furrowed bark. The furrows reveal pale, sometimes ...

Many coast live oak (Quercus agrifolia) trees are showing unusual browning in their canopies in the last month or two. If you look carefully, you may see small, crescent-shaped galls forming on the ...

The cells that make up the walls of the finest of all lymphatic vessels have a lobate, oak leaf-like shape that makes them particularly resilient to changes in fluid volume. A similar cell shape also ...