10; see text Chthamalia is a genus of flowering plants in the dogbane family (Apocynaceae: Gonolobinae).

The genus was first formally named in 1844.

[2] It contains approximately 10[1] to 15[3] species native to Mexico and the southern United States.

Chthamalia is accepted as a genus by Plants of the World Online,[1] but is considered by others to be a synonym or a subgenus of Matelea.

[4] This Apocynaceae article is a stub.