Abstract
All 13 species of the genus Zeravschania were studied in molecular and morphological analyzes. The molecular study showed that Zeravschania is a clearly paraphyletic taxon including monotypic genera Demavendia and Haussknechtia. Further phylogenetic, anatomical and morphological studies are needed to confirm taxonomic position of these genera. Zeravschania afghanica confirms its placement in the genus Zeravschania, not in Cephalopodum or Selinum. Dichoropetalum knappii confirms its placement in the genus Dichoropetalum, not in Zeravschania.
Highlights
The genus Zeravschania Korovin (Apiaceae) was described as a monotypic genus with a type species Z. regeliana Korovin distributed in mountainous Central Asia [1]
We determined internal transcribed spacer (ITS) sequences for 27 samples of 13 Zeravschania species
The emphasis of our samplings focused on the species of Zeravschania plus their closest congeners Demavendia pastinacifolia (Boiss. et Hausskn.) Pimenov, Haussknechtia elymaitica Boiss., Johrenia DC., Dichoropetalum Fenzl and Cephalopodum Korovin which chosen through results of several previous phylogenetic studies [2,3,4,5, 8, 9]
Summary
The genus Zeravschania Korovin (Apiaceae) was described as a monotypic genus with a type species Z. regeliana Korovin distributed in mountainous Central Asia [1]. Seven species were included in Zeravschania from other genera such as Peucedanum L. All members of the genus are perennial polycarpic plants distributed in Iran, Afghanistan, and Central Asia (Pamir-Alai mountainous region). The greatest diversity of species is founded in northeastern Iran and northern Afghanistan. Zeravschania to date includes 13 species, but the question of the genus composition remains debatable. Species of the genus Zeravschania have quite homogeneous morphological features. According to results of molecular studies [9, 10] three studied species namely Z. aucheri (Boiss.) Pimenov, Z. membranacea (Boiss.) Pimenov, and Z. regeliana form a clade with strong support. Close relationships of Zeravschania and monotypic genera Demavendia Pimenov and Haussknechtia Boiss. Close relationships of Zeravschania and monotypic genera Demavendia Pimenov and Haussknechtia Boiss. were showed in this study
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