Oliver, Portia and myself had a foray around the neighbourhood and we found lots of powdery mildews infecting a variety of species.
Uromyces geranii on/with Geranium molle, above and two below.
Chocolate Spot (Botrytis fabae) on/with my Dad's broad bean (Vicia faba) .
Sphaerotheca epilobii on/with Epilobium hirsutum.
Erysiphe lonicerae on/with Portia's Honeysuckle (Lonicera periclymenum).
Sphaerotheca aphanis on/with Geum urbanum, above and below.