| Classification |
| Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order Type: Eudicots-Rosids I
Order: Rosales
Family: Celtidaceae + Cannabinaceae
Family Common Name: Hackberry Family
Genera: Celtis, Humulus |
Defining Features: Wind pollinated.
Fruits are adapted for dispersal by birds.
Defining Morphology: Floral
Features: Flowers are usually unisexual (Plants are monoecious). Flowers
are very small and borne in an inflorescence of determinate, axillary clusters,
raceme-like or reduced to a solitary flower. Ovaries are superior with
apical placentation. Fruit and Seed Features: Dicotyledon. Fruits are often
drupe and have sweet flesh. Vegetative Features: Habit as trees or shrubs
or as a vigorous herb, either twining or erect, with strong stem fibers.
Leaves are alternate, simple, deciduous with oblique bases or compound
or palmately lobed and either alternate or opposite. Leaves margin is serrate.
Stipules are present.
Distribution: Temperate regions
of N. Hemisphere and few species in the tropics.
Economic Use: As a source
of timber, as cultivated garden ornamental, as the source of hops used
in brewing beer and as the source of marijuana, hashish and hemp fiber.
The family has a long history of association with humans, which has resulted
in many various cultivars.
Number of Genera Globally:
11
Number of Species Globally: 180
