Aecial cups on leaf undersurface of Dicentra cucullaria; spermatia on both surfaces of leaf margins on Dicentra cucullaria; uredia and telia erumpent from underleaf surfaces of Urticastrum divaricatum.
Spores
Aeciospores 12-17 x 13-21 µm, globose to subglobose, verrucose, orange with hyaline wall; uredospores 18-21 x 20-26 m, ellipsoid, spiny, orange with hyaline walls; teliospores 10-21 x 29-42 m, 1-3 cells, cylindric, brown, wall hyaline.
Diagnostic macroscopic feature
Yellow granular spots on undersurface of dutchman's breeches, brown granular spots on leaf undersurfaces of stinging nettle
Nutritional Mode
Obligate parasite
Substrate
Aecia on Dicentra cucullaria (L.) Bernh.; obligate parasite with uredia, telia, and basidia on Urticastrum divaricatum (L.) Ktze.
Habitat
woodland
Fruiting Season
Aecia and spermatia in spring; uredia, telia in summer, fall; basidia in spring
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