Iostephane is a genus of Mexican flowering plants in the family Asteraceae.

[5] The species are rosette-forming herbaceous perennials that produce relatively large heads with yellow or purple (I. heterophylla) rays.

Molecular phylogenetic studies by Schilling in 1991,[6] suggested that there is an unexpectedly close relationship between Iostephane and Dendroviguiera (formerly Viguiera sect.

Maculatae), a genus of shrubs and trees that is also endemic to Mexico.

[7] As accepted by Plants of the World Online,[5] and Global Compositae Checklist;[1] This Heliantheae article is a stub.