Aphananthe is a small genus of evergreen trees belonging to the family Cannabaceae, within the order Rosales. Around six species are currently recognised, distributed across a remarkably disjunct range that spans Korea, Japan, South-east Asia, Madagascar, Mexico, Central America, and Australia.
The trees are characterised by alternate, toothed leaves. Flowers are unisexual (the genus is functionally dioecious or monoecious depending on species), and the fruits are fleshy drupes. The combination of toothed leaves and drupe fruits places Aphananthe close to related genera such as Celtis (hackberries) and Trema within the Cannabaceae family, a group that also includes Cannabis and Humulus.
Notable members include Aphananthe aspera, native to East Asia, and Aphananthe philippinensis from South-east Asia. The disjunct distribution — with species in East Asia, the Pacific, Madagascar, and the Americas — makes the genus of biogeographic interest.
Etymology
The name Aphananthe derives from Greek aphanēs (invisible or insignificant) and anthos (flower), referring to the genus's inconspicuous unisexual flowers.
Distribution
Species occur across a wide disjunct range: Korea, Japan, and South-east Asia in the Old World, Madagascar, Australia, and Mexico through Central America in the New World.
Taxonomy Notes
Aphananthe is placed in the family Cannabaceae, order Rosales (per GBIF). The family also includes Celtis, Cannabis, and Humulus. GBIF records 5 descendant taxa under this genus at accepted status.
