Taraxacum officinale var. ungulatum Brenner in Meddeland. Soc. Fauna Fl. Fenn. 32: 97. 1906
Taraxacum officinale var. ungulatum in Meddeland. Soc. Fauna Fl. Fenn. 32: 97. 1906
is basionym for Taraxacum ungulatum in Meddeland. Soc. Fauna Fl. Fenn. 50: 54. 1925
Taraxacum officinale var. ungulatum in Meddeland. Soc. Fauna Fl. Fenn. 32: 97. 1906