Hieracium obscurum Rchb., Iconogr. Bot. Pl. Crit. 1: 92. 1823
Hieracium obscurum, Iconogr. Bot. Pl. Crit. 1: 92. 1823
is earlier homonym of Hieracium obscurum in Syll. Pl. Nov. 1: 184. 1823–1824
is basionym for Pilosella piloselloides subsp. obscura in Ber. Bayer. Bot. Ges. 83: 200. 2013
is basionym for Hieracium praealtum subsp. obscurum, Prodr. Fl. Böhmen: 197. 1871
is basionym for Hieracium florentinum subsp. obscurum, Hierac. Mitt.-Eur. 1: 530. 1885
is basionym for Hieracium piloselloides subsp. obscurum in Hegi, Ill. Fl. Mitt.-Eur. 6: 1230. 1929
is basionym for Pilosella obscura in Bull. Soc. Dauphin. Echange Pl.: 282. 1880
Hieracium obscurum, Iconogr. Bot. Pl. Crit. 1: 92. 1823