Lepidium oligodontum heavily infected with Albugo candida. As explained in de Lange et al. (2013) Albugo plays a prominent role in the ecology of this species

de Lange, P.J.; Heenan, P.B.; Houliston, G.J.; Rolfe, J.R.; Mitchell, A.D. 2013: New Lepidium (Brassicaceae) from New Zealand. PhytoKeys 24: 1-147