Bartolucci, F., Galasso, G., & Conti, F. (2020).

Nomenclatural novelties and typification of names in Scorzonera sensu lato (Asteraceae, Cichorieae) for the Italian vascular flora

. Phytotaxa, 437(5), 279–290. https://doi.org/10.11646/phytotaxa.437.5.2