Knautia arvensis var. pseudolongifolia Szabó in Math. Term. Közlem. 31: 244. 1911
Knautia arvensis var. pseudolongifolia in Math. Term. Közlem. 31: 244. 1911
is basionym for Knautia arvensis subsp. pseudolongifolia in Mitt. Thüring. Bot. Ges. 1: 118. 1949
Knautia arvensis var. pseudolongifolia in Math. Term. Közlem. 31: 244. 1911