Hieracium rigidum subsp. trichocaulon Dahlst. in Kongl. Svenska Vetensk. Acad. Handl., ser. 2, 26(3): 235. 1894
Hieracium rigidum subsp. trichocaulon in Kongl. Svenska Vetensk. Acad. Handl., ser. 2, 26(3): 235. 1894
is basionym for Hieracium trichocaulon in Bih. Kongl. Svenska Vetensk.-Akad. Handl. 28(3, 7): 128. 1902
is basionym for Hieracium laevigatum subsp. trichocaulon in Engler, Pflanzenr. 79: 880. 1922
Hieracium rigidum subsp. trichocaulon in Kongl. Svenska Vetensk. Acad. Handl., ser. 2, 26(3): 235. 1894