Hieracium pseudonigrescens (Zahn) Prain, Index Kew., Suppl. 4: 119. 1913
Hieracium pseudonigrescens, Index Kew., Suppl. 4: 119. 1913
is new combination for Hieracium atratum var. pseudonigrescens in Koch, Syn. Deut. Schweiz. Fl., ed. 3: 1847. 1901
non Hieracium pseudonigrescens, 1890
Hieracium pseudonigrescens, Index Kew., Suppl. 4: 119. 1913