Peronospora astragali-purpurei Mayor & Viennot-Bourgin, 1949
on Astragalus
gall
upperside of the leaves with paled, slightly embossed patches; at the corresponding underside a greyish white fungal bloom, consisting of erect, distally strongly branched conidiophores.
hostplants
Fabaceae, narrowly monofaag
Astragalus hypoglottis (= purpureus).
references
Brandenburger (1985a), Klenke & Scholler (2015a).