A TAXONOMIC REVISION OF THE GENERA STERIGMOSTEMUM AND PETINIOTIA IN IRAN

The genus Sterigmostemum M. Bieb. belongs to the tribe Hesperideae of the Brassicaceae family. The results of this research confirmed the recognition of five species in Iran: S.incanum, S. sulphureum,  S. ramosissimum,  S. acanthocarpum  and S. longistylum. S. laevicaule is excluded from the genus Sterigmostemum and is regarded as a synonym of Erysimum crassicaule. The new combination, namely, Petiniotia purpurascens (Boiss.) J. Leonard is improved by obtained data. Finally, based upon diagnostic characters, key to species of the genus Sterigmostemum new to Iran is presented.