Iostephane is a genus of Mexican flowering plants in the family Asteraceae.[2][3][4] They were first published in G.Bentham & J.D.Hooker, Genera Plantarum Vol.2 on page 368 in 1873.[5]
| Iostephane | |
|---|---|
 | |
| Iostephane heterophylla | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Heliantheae |
| Subtribe: | Helianthinae |
| Genus: | Iostephane Benth. |
| Type species | |
| Iostephane heterophylla | |
| Synonyms[1] | |
| |
The species are rosette-forming herbaceous perennials that produce relatively large heads with yellow or purple (I. heterophylla) rays. They have large, somewhat quadrate cypselae (achenes), that may either have or lack a pappus.
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]
- Iostephane heterophylla (Cav.) Benth. – widespread from Chihuahua to Oaxaca
- Iostephane madrensis (S.Wats.) Strother – Chihuahua
- Iostephane papposa J. J. Fay – Oaxaca
- Iostephane trilobata Hemsl. – Chiapas, Oaxaca, Puebla, México State
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