The Jeffrey pine, one of the iconic trees of the Sierra Nevada, appears to have eclipsed other pines to become the ...

UC Davis Professor Hugh Safford was hiking for pleasure in California's High Sierra when he stumbled upon a new elevation ...

and becomes quite furrowed in older trees. The eastern white pine adds a ring of side branches and a terminal shoot yearly with age. The cones of this species are up to eight inches long, have ...

Pine trees, like oaks and magnolias, rely on the wind to spread their sneeze-inducing, eye-watering pollen. And the prevalence of these types of trees in South Carolina is partly to blame for the ...

The whitebark pine is a keystone species in high-elevation areas. It provides food for grizzly bears and many other species. The trees also slow snowmelt, helping to maintain stream flow into the ...