https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:230841-1

Circumscription and phylogenetic position of Ligularia sect. Stenostegia (Asteraceae: Senecioneae) based on morphological, cytological, and molecular phylogenetic evidence, Ren et al. (2020): https://www.researchgate.net/publication/343864555_Circumscription_and_phylogenetic_position_of_Ligularia_sect_Stenostegia_Asteraceae_Senecioneae_based_on_morphological_cytological_and_molecular_phylogenetic_evidence