on roadside exposure of white hydrothermally altered volcanic tuff with Pinus chihuahuana, Pinus trieste and Quercus jonesii, just north of Barracnca Batopilas rim. Note typical leaf folding producing a weeping appearance.
on roadside exposure of white hydrothermally altered volcanic tuff with Pinus chihuahuana, Pinus trieste and Quercus jonesii, just north of Barracnca Batopilas rim. Note golden yellow tomentum on leaf underside
on roadside exposure of white hydrothermally altered volcanic tuff with Pinus chihuahuana, Pinus trieste and Quercus jonesii, just north of Barracnca Batopilas rim. Note distinctive golden yellow tomentum on underside of leathery leaves which are the largest of all Madrean oaks
on roadside exposure of white hydrothermally altered volcanic tuff with Pinus chihuahuana, Pinus trieste and Quercus jonesii, just north of Barracnca Batopilas rim. Note typical folded leathery leaves which are the largest of all Madrean oaks
on roadside exposure of white hydrothermally altered volcanic tuff with Pinus chihuahuana, Pinus Trieste, just north of Barracnca Batopilas rim. Tree on right is Q. tarahumara, tree on left is Q, jonesii