Michigan Trees: A Handbook of the Native and Most Important Introduced Species
ll. Lower side of leaves glabrous; sap not milky; leaves
crowded on short, spur-like branchlets; fruit a large, green pome. PYRUS, p. 142.
ee. Margin of leaves distinctly lobed.
f. Fruit an acorn. QUERCUS, p.96.
ff. Fruit not an acorn.
g. Leaves fan-shaped, with many fine veins radiating from the base of the blade. GINKGO, p. 3.
gg. Leaves not fan-shaped, without many fine veins radiating from the base of the blade.
h. Leaf-lobes entire.