HAMAMELIDAE REVIEW

Characterized by unisexual, reduced flowers

Ulmaceae - trees and shrubs, leaves alternate, simple with oblique bases, fruit a samara (Ulmus) or drupe (Celtis).

Cannabaceae - herbs, complex infls. in axils of leaves, two genera (Cannabis and Humulus).

Moraceae - trees and shrubs, fruit multiple, genera - Ficus, Maclura, Morus.

Urticaceae - herbs, leaves with stinging hairs, highly reduced flowers.

Juglandaceae - trees, leaves compound, male flowers in catkins, female flowers with bracts, fruit anut surrounded by involucres, genera - Juglans, Carya.

Fagaceae - trees or shrubs, leaves simple, male flowers often in catkins, female flowers solitary, fruit a 1-seeded nut, genera - Quercus, Fagus, Castanea.

Betulaceae - trees and shrubs, entire serrate leaves, male and female flowers in catkins, female catkins conelike, genera - Betula, Alnus.