on Viola, i think Viola sororia
on Cardamine hirsuta (hairy bittercress)
on Podophyllum peltatum
on planted hollyhock (Alcea rosea). I guess it's probably Puccinia malvacearum, although bladmineerders also gives Puccinia sherardiana and Puccinia heterospora as hosting on this plant
On Senecio vulgaris.
Dozens present on this tree
Dozens present on this tree