REDISCOVERY OF DIONYSIA BORNMUELLERI (PAX) CLAY (PRIMULACEAE) IN WEST IRAN

Dionysia bornmuelleri (Pax) Clay (Primulaceae) was rediscovered in 2021 in Kermanshah province, W of Iran, on the surface of wet limestone rock walls in Bayangan area far from its previously known habitat after not being documented for more than 100 years in Iran. The type specimen that was reported from Nova Mountain in Kermanshah province, is maintained in the herbarium of Berlin Botanical Garden (B). A detailed taxonomic description, photographs, and diagnostic characters to distinguish Dionysia bornmuelleri from its close relatives have been provided.