Rehmannia is a genus of seven species of flowering plants in the order Lamiales and family Orobanchaceae, endemic to China.[2] It has been placed as the only member of the monotypic tribe Rehmannieae,[1][3] but molecular phylogenetic studies suggest that it forms a clade with Triaenophora.[4] Contrary to the immense majority of the taxa of Orobanchaceae, Rehmannia is not parasitic.