217; See text Ayenia is a genus of flowering plants in the mallow family, Malvaceae.

[3] Species of Ayenia grow in diverse habitats, from open areas in dry and seasonally-dry regions to humid forests, river banks, and from lowlands to high elevations.

[3] Byttneria species are host plants to insects such as beetles of the genus Lonchophorellus.

A phylogenetic analysis found that Byttneria was paraphyletic and Ayenia was nested within it, and Rayleya was a sister clade to the others.

[3] In 2018 Christenhusz and Byng transferred the Byttneria and Rayleya names to Ayenia, which had nomenclatural priority.