Notes on some species of the genus Glaucium (Papaveraceae) in Iran

During the taxonomic revision of the genus Glaucium, G. contortuplicatum var. hirsutum is described as a new variety. This taxon differs from the type variety by having dense and appressed trichomes all along ovary (or junior silique). Leaf epidermis microcharacters of these two taxa are also compared. G. leiocarpum and G. elegans var. integerrima are reduced to synonymy of G. flavum and G. elegans var. elegans, respectively. Additionally, morphological characters and geographical distribution of the taxa studied in the world and in Iran are presented.