Hedbergia decurva  Hedbergia decurva, formerly Bartsia decurva, is a species of flowering plants in the family Orobanchaceae. It is an afromontane species, restricted to the mountains of northeastern Africa. The phylogeny of the genera of Rhinantheae has been explored using molecular characters. "Hedbergia decurva" groups with "Hedbergia longiflora" and "Hedbergia abyssinica" into a "Hedbergia" clade nested within the core Rhinantheae. These three taxa share evolutionary affinities with genera "Tozzia", "Bellardia", "Neobartsia", "Parentucellia", and "Odontites".