Zografidis, A., Esser, H.-J., Dimopoulos, P. & Raus, T. (2022)

Typification of the names Verbascum limnense and Celsia tomentosa (Scrophulariaceae) and a new nothospecies, V. × sipiadense, with the hybrid formula V. limnense × V. sinuatum

. Phytotaxa 542 (2): 214–220. https://doi.org/10.11646/phytotaxa.542.2.9