Quercus macrocarpa | Stanford
Here we see a form of Q. macrocarpa leaf, showing the enlarged central sinus. This is a hybrid form, with acorns sourced from Oikos Tree Crops in Michigan, in the early 2000’s. Oikos specializes in vigorous and disease-resistant forms of Bur Oak, and many other kinds of trees. For decades, Oikos has been a premier source of information on hybrid oaks, along with a source of nursery stock. Another more recent source is the Mossy Oak Nativ Nurseries. These folks are in the southeastern US, and have trees well adapted to those climates, with a special emphasis on wildlife-enhancing habitat trees.