Pandanus is one of the iconic tree genera of the New South Wales north coast.

Dacryodes is a tree genus in the family Burseraceae.

They are generally found associated with hollows of the Lepidodendron and Sigillaria tree genera, for which their fossils are contained within.

Xanthocercis is a tree genus in the family Fabaceae.

Acer is the most commonly infested tree genus in the United States, followed by Ulmus and Salix.

Acer is the most commonly infested tree genus in Canada.

It is a center of diversity for the tree genera Magnolia and Michelia, and the families Elaeocarpaceae and Elaeagnaceae.

A rather well-known exception is N. bebbianae which feeds on particular species from six tree genera representing five different plant families.

Castilla (sometimes incorrectly spelled Castilloa) is a tree genus belonging to the family Moraceae found native in Central America.

Glossopteris was the most prominent tree genus in the ancient southern supercontinent of Gondwana during the Permian period.