A new combination in (Boraginaceae, Rochelieae) based on morphological, molecular and palynological evidence.

was recently transferred to the monotypic genus based on phylogenetic studies, while the related species, , has remained in the genus . In this study, morphological, molecular, and palynological evidence supports that should be transferred to the genus . Both and share a combination of nutlets features that distinguish them from : a longer adaxial keel and a linear attachment scar. Phylogenetic analysis based on ITS and strongly supports as the sister taxon of . In addition, pollen grains of these two species are 3-syncolporate with 3 alternating pseudocolpi, which is significantly different from the grains of taxa. Based on the above evidence, the new combination is proposed.