Ramularia rubella

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Description

Ramularia rubella is a plant pathogen that infects Docks (Rumex species). Infection produces reddish spots on leaves. The red colour is caused by the production of rubellin, a phytotoxin. Small white tufts of conidia in caespituli, emerging from stomata, should be visible.

Similar Species

Ramularia pratensis var. pratensis also affects Rumex spp. Similar spots can be caused by pathogens or physical damage.

Identification difficulty

microscope

Recording advice

Microscopic examination is needed. We recommend that your record is verified by an expert before submission to NatureSpot

Habitat

Docks

sue
Huncote, pasture by Thurlaston Brook
23 March 2026
broad-leaved dock
sue
Croft Hill (E)
23 March 2026
x400, Cotton Blue stain
sue
Croft Hill (E)
23 March 2026
Rumex crispus
sue
Huncote, pasture by Thurlaston Brook
23 March 2026
conidia
x400, Cotton Blue stain
sue
Croft Hill (E)
23 March 2026
sue
Thornton, path between reservoir and Bricklayer's Arms
15 March 2026