A morphometric study of populations from the central-southern Apennines and Sicily of the Italian endemic Corydalis densiflora has been undertaken, based on herbarium specimens and field research. A new subspecies, C. densiflora subsp. apennina, is described from the central Apennines. It differs from C. densiflora s.str. by its more divided leaves and bracts, basal leaf with more numerous and narrower leaflets, longer middle and lateral lobes of middle and upper bracts, narrower lower petal wing, shorter inner petals and shorter upper stamen.

Citation: Conti F., Bracchetti L., Uzunov D. & Bartolucci F. 2019: A new subspecies of Corydalis densiflora (Papaveraceae) from the Apennines (Italy). – Willdenowia 49: 53–64. doi:  https://doi.org/10.3372/wi.49.49107

Version of record first published online on 29 March 2019 ahead of inclusion in April 2019 issue.