| Classification |
| Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order Type: Eudicots-Rosids I
Order: Rosales
Family: Ulmaceae
Family Common Name: Elm Family
Genera: Zelkova |
Defining Features: The family
was divided into two subfamilies based on the characters of the leaf veins
and fruits. The subfamily Cetiodeae is considered a new family, Celtideaceae
and now Celtidaceae and Cannabinaceae form one family.
Defining Morphology: Floral
Features: Flowers are actinomorphic, bisexual or unisexual with hypanthium.
Plants monoecious, dioecious or polygamous. Flowers are very small, apetalous
and borne in an inflorescence of determinate axillary clusters. Ovaries
are superior with apical placentation. Fruit and Seed Features: Dicotyledon.
Fruit is a nut, nutlet or samara. Seeds are flat with or without endosperm.
Vegetative Features: Habit as trees or shrubs. Leaves are simple, alternate
(rarely opposite), with oblique bases, strong serrate margins and prominent
pinnate veins. Stipules are present, but deciduous.
Distribution: Widespread in
north temperate, especially in Asia, except Pacific and Australia.
Economic Use: As a source
of timber, as cultivated garden ornamentals and also used medicinally.
Number of Genera Globally:
6
Number of Species Globally:
40
