underside of Trientalis leaves covered in white spores of the smut fungus.
Trientalis plant looking pale due to the smut fungus infection
conidia of Urocystis trientalis. The spores are ca 9 um in length
The anamorph stage of the same Urocystis trientalis; strikingly different looking symptoms. Near Winterberg, Germany, June 2025. #fungifriends #smutfungi
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