Ahernia is a genus of a single species, Ahernia glandulosa, a tree in the family Achariaceae,[1] native to Hainan and Luzon island of the Philippines.

Previously it was treated in the family Flacourtiaceae[2] before being placed in Achariaceae.

[3] Ahernia is closely related to the American genera Hasseltia, Macrothumia, and Pleuranthodendron, but differs in its axillary racemes and more numerous (10–15) petals.

[4][5] Ahernia glandulosa is found in low elevation primary forests and is known in the Tagalog language as butun or sanglai.

It grows 8–15 m (26–49 ft) tall.