Sapindales genera

Ailanthus (; derived from ailanto, an Ambonese word probably meaning "tree of the gods" or "tree of heaven") is a genus of trees belonging to the family Simaroubaceae, in the order Sapindales (formerly Rutales or Geraniales). The genus is native from East Asia south to northern Australasia. One species, the tree of heaven (Ailanthus altissima), is considered a weed or invasive species in some parts of the world.

Biebersteinia is a genus containing four, or five, accepted species of herbaceous plants in the flowering plant order Sapindales. They occur from Greece in the eastern Mediterranean, to western Siberia, Central Asia, and the western Himalaya. They have erect stems (to 0.3 metres tall in B. odora, and to 2 metres or more in B. heterostemon) with a pleasant spicy odour, and have tuberous rhizomes; the leaves are finely divided, green to greyish-green, and the flowers are yellow (red with a yellow base in B. orphanidis), with five petals. The plants are superficially similar in appearan

Quassia ( or ) is a plant genus in the family Simaroubaceae. Its size is disputed; some botanists treat it as consisting of only one species, Quassia amara from tropical South America, while others treat it in a wide circumscription as a pantropical genus containing up to 40 species of trees and shrubs.

Kirkia is a genus of plant in family Kirkiaceae. It was previously placed in family Simaroubaceae, but was transferred into Kirkiaceae, together with Pleiokirkia, because these genera produce neither quassinoids nor limonoids.

Brucea is a genus of plant in the family Simaroubaceae. It is named for the Scottish scholar and explorer James Bruce.

Picrasma is a genus of flowering plants in the family Simaroubaceae, comprising six to nine species native to temperate to tropical regions of Asia, and tropical regions of the Americas. The species are shrubs and trees growing up to 20 m tall.

Simarouba is a genus of trees and shrubs in the family Simaroubaceae, native to the neotropics. It has been grouped in the subtribe Simaroubina along with the Simaba and Quassia genera. They have compound leaves, with between 1 and 12 pairs of alternate pinnate leaflets. Their flowers are unisexual, relatively small (around 1 cm long) and arranged in large panicles. Plants are dioecious, bearing only male or female flowers. The individual flowers have between 4 and 6 sepals and petals and between 8 and 12 stamens. The fruit is a carpophore and has up to 5 drupaceous mericarps.

Eurycoma is a small genus of flowering plants in the family Simaroubaceae, native to tropical Southeast Asia. They are small evergreen trees with spirally arranged pinnate leaves. The flowers are small, produced in large panicles.

Tetradiclis is a genus of flowering plants belonging to the family Nitrariaceae.

Castela is a genus of thorny shrubs and small trees in the family Simaroubaceae. Members of the genus are native to the Americas, especially the tropical regions. The generic name honours the French naturalist René Richard Louis Castel. Castela is dioecious, with male and female flowers on separate plants.

Picrolemma is a genus of flowering plants belonging to the family Simaroubaceae. They are small dioecious shrubs.

Simaba is a genus of flowering plants belonging to the family Simaroubaceae.

Perriera is a genus of flowering plants belonging to the family Simaroubaceae.

Soulamea is a genus of plant in family Simaroubaceae. They are shrubs or small trees, and are dioecious, with the exception of Soulamea amara, which has bisexual flowers. It is native to parts of Malesia in the West Pacific. From the Seychelles, Borneo, Bismarck Archipelago, Caroline Islands, Marshall Islands, New Caledonia, New Guinea and Maluku to the Solomon Islands, Vanuatu, and Fiji.

Hannoa is a genus of plant in the family Simaroubaceae. Found in tropical parts of Africa.

Pierreodendron is a genus of plants in the family Simaroubaceae.