Comfrey Rust - Melampsorella symphyti
The primary hosts of the rust fungus Melampsorella symphyti are various members of the Boraginaceae including Common Comfrey and Russian Comfrey. The underside may be completely covered with the yellow-orange uredinia. The telia are formed in the lower epidermis.
The alternate aecial host is the Silver-fir, Abies. It is not considered to be a gall causer on either host.
The closely related Melampsorella caryophyllacearum also affects Silver-fir, causing Witches'-broom galls
host 
Photograph the rust on host plant; ensure you have noted the host-plant species in your comments
Alternates between Silver-fir and Comfrey.
Graham Calow
Stoney Stanton, stream play area near Stoney Woods
15 May 2020
uredinia on Russian Comfrey
conf. R Lemmon
Graham Calow
Stoney Stanton, stream play area near Stoney Woods
15 May 2020
Rust on Russian Comfrey
conf. R Lemmon
Graham Calow
Stoney Stanton, stream play area near Stoney Woods
15 May 2020
uredinia on Russian Comfrey
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Species profile
- Common names
- Comfrey Rust
- Species group:
- fungus
- Kingdom:
- Fungi
- Order:
- Pucciniales
- Family:
- Pucciniastraceae
- Records on NatureSpot:
- 1
- First record:
- 15/05/2020 (Calow, Graham)
- Last record:
- 15/05/2020 (Calow, Graham)
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