Hieracium rigidum subsp. deltophyllum (Arv.-Touv.) Sudre, Hierac. Centre France: 32. 1902
Hieracium rigidum subsp. deltophyllum, Hierac. Centre France: 32. 1902
is new combination for Hieracium deltophyllum in Ann. Soc. Linn. Lyon, ser. 2, 34: 120. 1888
Hieracium rigidum subsp. deltophyllum, Hierac. Centre France: 32. 1902