Zerdana Boiss. in Ann. Sci. Nat., Bot. ser. 2, 17: 84. 1842.

Tribe: Anchonieae DC.

Note. – Zerdana was recognized in the past 175 years as a monospecific genus endemic to SW Iran. It has recently been united with Sterigmostemum by GERMAN & AL-SHEHBAZ (2017) based on molecular phylogenetic data and a closer evaluation with morphology.