On a particularly large Lepidium campestre (only one Lepidium plant noticed here), growing alongside gravel parking area by willow-dominated creek edge and Alopecurus-dominated wet meadow/pasture. The Lepidium was also infected with Albugo (CJR 6269).
Description
Rare? Only noticed on this one plant.
Voucher image
Photos posted on iNaturalist: https://www.inaturalist.org/observations/227862840.