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Iostephane

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Iostephane
Iostephane heterophylla
Scientific classification Edit this 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]
  • Pionocarpus S.F.Blake in Proc. Amer. Acad. Arts 51: 521 (1916)

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]

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]

Species

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As accepted by Plants of the World Online,[5] and Global Compositae Checklist;[1]

References

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  1. ^ a b Flann, C (ed) 2009+ Global Compositae Checklist
  2. ^ Bentham, George. 1873. Genera Plantarum 2: 368 in Latin
  3. ^ Strother, J. L. 1983. Pionocarpus becomes Iostephane (Compositae: Heliantheae): a synopsis. Madroño 30: 34-48.
  4. ^ Tropicos, Iostephane Benth.
  5. ^ a b "Iostephane Benth. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2 November 2023.
  6. ^ Schilling, E. E. and J. L. Panero. 1991. Evidence for a close relationship between Iostephane and Viguiera sect. Maculatae (Asteraceae: Heliantheae). American Journal of Botany 78: 1054-1062.
  7. ^ Schilling, E, E. and J. L. Panero 2011. A revised classification of subtribe Helianthinae (Asteraceae: Heliantheae). II. Derived lineages. Botanical Journal of the Linnean Society 167: 311-331.