Peronospora spec. on Aquilegia
systemic infection: leaves of whole plant chlorotic with pale patches and curling. Underside a grey fungal bloom, consisting of vertical, distally strongly branched conidiophores.
an as yet undescribed fungus, originally found in Korea, but known since 2013 from the UK, where it is considered a serious threat to garden columbines.
Denton, Beal, Kilty, Denton, Choi & Thines (2015a).