Szeląg, Z. 2025. Two new species in Hieracium sect. Umbrosa (Asteraceae) from Mt. Babia Góra, Western Carpathians, Poland. Phytotaxa. 684, 2 (Feb. 2025), 283–288. DOI:https://doi.org/10.11646/phytotaxa.684.2.11.