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Plant Family Characteristics for Field Identification

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Class Magnoliopsida (Dicotyledons) Part 4
Selected families of Subclass Hamamelidae.

FAMILY	CALYX	COROLLA	ANDROECIUM	GYNOECIUM	FRUIT	LEAVES	OTHER NOTES, common genera
Subclass Hamamelidae: This is the smallest subclass within the dicots. New data suggest this is an artificial group of families. Members are primarily woody plants with reduced wind-pollinated (anemophilous) flowers. The more advanced families have unisexual flowers born in catkins and have indehiscent, one-seeded, unilocular fruits. Catkins are compact inflorescences of unisexual flowers, typically lacking petals but having bracts. These separate male and female catkins may occur on the same individual plant (monoecious) or on separate plants (dioecious).
Ulmaceae Elm							Ulmus = Elm, Celtis = Hackberry
Fagaceae Beech							Fagus = Beech, Quercus = Oak
Betulaceae Birch							Betula = Birch, Alnus = Alder, Carpinus = Blue Beech, Ostrya = Ironwood, Hop Hornbeam, Corylus = Hazelnut
Some other families in Hamamelidae - Not covered in class because other NCP courses cover trees and shrubs.
Hamamelidaceae Witch Hazel							Hamamelis = Witch Hazel
Moraceae Mulberry							Morus = Mulberry
Urticaceae Nettle							Urtica = Nettle and other genera
Juglandaceae Walnut							Juglans = Walnut Carya = Hickory