Puccinia piloselloidearum

Click here to support NatureSpot by making a donation - small or large - your gift is very much appreciated. Thank you.

Alternative names

Puccinia hieracii var. piloselloidearum

Description

The rust fungus Puccinia piloselloidearum affects only Mouse-ear-hawkweed (Pilosella) species. Small brown uredinia and telia are produced on the upper leaf-surfaces. It is listed as a gall-causer in Redfern & Shirley (2023).

Identification difficulty

host

Recording advice

Photograph the rust on the host. Ensure you have noted the host-plant species in your comments

Habitat

On Mouse-ear-hawkweed (Pilosella) species in grasslands; pioneering vegetation communities on e.g. brownfield land; waste ground

Further Information

This is part of the Puccinia hieracii group of related species that affect various species in the Asteraceae

Graham Calow
Huncote, St James the Greater Churchyard
03 June 2019
rust on Pilosella flagellaris subsp. flagellaris
Graham Calow
Huncote, St James the Greater Churchyard
03 June 2019
sue
Coleorton, Church Town, St John's chapel yard
31 May 2026
a few uredinia on underside of leaf
sue
Coleorton, Church Town, St John's chapel yard
31 May 2026
urediniospores
sue
Coleorton, Church Town, St John's chapel yard
31 May 2026
on Mouse-ear Hawkweed
sue
Coleorton, Church Town, St John's chapel yard
31 May 2026
uredinia, mainly on leaf uppersides