Hieracium florentinum subsp. obscurum (Rchb.) Nägeli & Peter, Hierac. Mitt.-Eur. 1: 530. 1885
Hieracium florentinum subsp. obscurum, Hierac. Mitt.-Eur. 1: 530. 1885
is new combination for Hieracium obscurum, Iconogr. Bot. Pl. Crit. 1: 92. 1823
has orthographic variant Hieracium pseudoeffusum subsp. obscurum