Hieracium pallidum subsp. didymum (Zahn) Zahn in Schinz & Keller, Fl. Schweiz, ed. 3, 2: 418. 1914
Hieracium pallidum subsp. didymum in Schinz & Keller, Fl. Schweiz, ed. 3, 2: 418. 1914
is new combination for Hieracium schmidtii subsp. didymum in Schinz & Keller, Fl. Schweiz, ed. 2, 2: 281. 1905
Hieracium pallidum subsp. didymum in Schinz & Keller, Fl. Schweiz, ed. 3, 2: 418. 1914