Peronospora aquilegiicola Thines, Denton & Choi, 2019
systemic infection: leaves of whole plant chlorotic with pale patches and curling. Underside a grey fungal bloom, consisting of vertical, distally strongly branched conidiophores.
Aquilegia alpina, buergeriana, flabellata, viridiflora, vulgaris.
Originally found in Korea, but known since 2013 from the UK, where it is considered a serious threat to garden columbines. In a garden in NW Germany the first symptoms were recorded in 2019.
Denton, Beal, Kilty, ao (2015a), Thines, Denton, Beal ao (2019a), Thines, Buaya, Ali & Brand (2020a).