Staminate and pistillate flowers in catkins.
Fruit dry Populus in
Salicaceæ 45
Fruit fleshy Morus in
Moraceæ 151
Staminate and pistillate flowers not in catkins.
Pistillate and staminate flowers separate.
Leaves 3-nerved at the base, fruit a
1-seeded drupe Celtis in
Ulmaceæ 146
Leaves 5-nerved at the base, fruit a head of
carpels or achenes.
Bark fissured, not peeling off in flakes,
leaves aromatic Altingiaceæ 166
Bark peeling off in flakes, leaves not
aromatic Platanaceæ 168
Pistillate and staminate flowers in one.