Peronospora calepinae Gäumann, 1918
on Calepina
gall
upperside of the leaves with paled, slightly embossed patches; at the underside a white fungal down, consisting of erect, distally repeatedly dichotomously branched conidiophores.
hostplants
Brassicaceae, monofaag
Calepina irregularis.
references
Brandenburger (1985a), Klenke & Scholler (2015a).