Youngia conjunctiva Babc. & Stebbins accepted as Pseudoyoungia conjuctiva (Babc. & Stebbins) D.Maity & Maiti (original description)
Youngia japonica subsp. longiflora Babc. & Stebbins accepted as Youngia longiflora (Babc. & Stebbins) C.Shih (original description)
Youngia paleacea subsp. smithii Babc. & Stebbins accepted as Youngia paleacea (Diels) Babc. & Stebbins (original description)
Youngia paleacea subsp. typica Babc. & Stebbins accepted as Youngia paleacea (Diels) Babc. & Stebbins (original description)
Youngia paleacea subsp. yunnanensis (Babc.) Babc. & Stebbins accepted as Youngia paleacea (Diels) Babc. & Stebbins (original description)
Youngia tenuifolia subsp. tenuicaulis Babc. & Stebbins accepted as Crepidifolium akagii (Kitag.) Sennikov (original description)
Youngia tenuifolia subsp. typica Babc. & Stebbins accepted as Crepidifolium tenuifolium (Willd.) Sennikov (original description)