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Family Cannabaceae

Description: Erect or twining herbs, frequently woody at base.

Leaves opposite or alternate, palmately compound, or simple and commonly palmately lobed or rarely unlobed, regularly toothed.

Inflorescence axillary, paniculate to cymose. Flowers unisexual, plants mostly dioecious. Male flowers pedicellate, perianth 5-lobed, stamens 5, erect in bud. Female flowers sessile, perianth undivided, cupular; ovary 1-locular; stigmas 2.

Fruit an achene.


Distribution and occurrence: World: 11 genera, 170 species, worldwide. Australia: 5 genera, ca. 15 species, all States.

External links:
Angiosperm Phylogeny Website (Family: Cannabaceae, Order: Rosales)
Wikipedia

Edited by H. Sauquet (Jan 2019: circumscription, occurrence, and key, not description); note that several genera of Cannabaceae (incl. Aphananthe, Celtis, and Trema) were previously included as members of Ulmaceae here (PlantNET) and in the Flora of Australia (1989)

Text by G. J. Harden
Taxon concept: Angiosperm Phylogeny Group / Australian Plant Census (2018)

 Key to the genera 
1Climbers or erect herbs, leaves palmately compound or deeply lobed (rarely unlobed), fruit an achene2
Trees or shrubs, leaves simple, not deeply lobed, fruit a drupe3
2Climbers; leaves simple, palmately lobed or rarely unlobedHumulus
Erect herbs; leaves palmately compound
                       Back to 1
Cannabis
3Leaves toothed, the veins ending in spinose teeth; leaves mostly strictly pinnately veined, rarely 3-veined from baseAphananthe
Leaves either entire or toothed but teeth not spinose; leaves 3-veined from base, secondary veins usually extending at least midway up the lamina
                       Back to 1
4
4Lower surface of leaves not scabrous, margins entire or toothedCeltis
Both surfaces of leaves scabrous, margins toothed
                       Back to 3
Trema

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