Guacchio, E.D., Caputo, P. and Iamonico, D. 2022.

About the identity of Cnicus firmus (Asteraceae, Cardueae)

. Phytotaxa. 533, 4 (Feb. 2022), 230–234. DOI:https://doi.org/10.11646/phytotaxa.533.4.6.