''Iostephane'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of Mexican flowering plants in the family

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

. They were first published in G.Bentham & J.D.Hooker, Genera Plantarum Vol.2 on page 368 in 1873. The species are rosette-forming herbaceous

perennials In horticulture, the term perennial ('' per-'' + '' -ennial'', "through the year") is used to differentiate a plant from shorter-lived annuals and biennials. It has thus been defined as a plant that lives more than 2 years. The term is also ...

that produce relatively large heads with yellow or purple (''I. heterophylla'') rays. They have large, somewhat quadrate cypselae (

achenes An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not open ...

), that may either have or lack a pappus. Molecular phylogenetic studies by Schilling in 1991, 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 Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

.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.

Species

As accepted by

Plants of the World Online Plants of the World Online (POWO) is an online taxonomic database published by the Royal Botanic Gardens, Kew. History Following the Convention on Biological Diversity, the Royal Botanic Gardens in Kew launched Plants of the World Online i ...

, and Global Compositae Checklist;Flann, C (ed) 2009+ Global Compositae Checklist
/ref> * ''

Iostephane heterophylla ''Iostephane heterophylla'' is a species of rosette-forming herbaceous perennials that produce heads of purple flowers. It is found across southwest Mexico, from Chihuahua to Oaxaca Oaxaca, officially the Free and Sovereign State of Oaxaca, ...

'' (Cav.) Benth. – widespread from Chihuahua to

Oaxaca Oaxaca, officially the Free and Sovereign State of Oaxaca, is one of the 32 states that compose the political divisions of Mexico, Federative Entities of the Mexico, United Mexican States. It is divided into municipalities of Oaxaca, 570 munici ...

* ''

Iostephane madrensis ''Iostephane'' is a genus of Mexican flowering plants in the family Asteraceae. They were first published in G.Bentham & J.D.Hooker, Genera Plantarum Vol.2 on page 368 in 1873. The species are rosette-forming herbaceous perennials that produce r ...

'' (S.Wats.) Strother – Chihuahua * ''

Iostephane papposa ''Iostephane'' is a genus of Mexico, Mexican flowering plants in the family Asteraceae. They were first published in G.Bentham & J.D.Hooker, Genera Plantarum Vol.2 on page 368 in 1873. The species are rosette-forming herbaceous Perennial plants, ...

'' J. J. Fay –

* ''

Iostephane trilobata ''Iostephane'' is a genus of Mexican flowering plants in the family Asteraceae. They were first published in G.Bentham & J.D.Hooker, Genera Plantarum Vol.2 on page 368 in 1873. The species are rosette-forming herbaceous perennials that produce r ...

'' Hemsl. –

Chiapas Chiapas, officially the Free and Sovereign State of Chiapas, is one of the states that make up the Political divisions of Mexico, 32 federal entities of Mexico. It comprises Municipalities of Chiapas, 124 municipalities and its capital and large ...

Puebla Puebla, officially the Free and Sovereign State of Puebla, is one of the 31 states that, along with Mexico City, comprise the Federal Entities of Mexico. It is divided into 217 municipalities and its capital is Puebla City. Part of east-centr ...

México State The State of Mexico, officially just Mexico, is one of the 32 federal entities of the United Mexican States. Colloquially known as Edomex (from , the abbreviation of , and ), to distinguish it from the name of the whole country, it is the mos ...

References

Heliantheae Endemic flora of Mexico Asteraceae genera Plants described in 1873 {{Heliantheae-stub