Bitter Chocolate Rust - Uromyces ficariae

Description

Bitter Chocolate Rust affects Lesser Celandine (Ficaria verna). There is no host plant alternation and only the chocolate-brown telia are present on raised swollen areas of leaves and petioles, causing galls. 

Identification difficulty

host

Recording advice

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

Habitat

on Lesser Celandine (Ficaria verna)

When to see it

Spring and early summer.

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Species profile

Common names
Bitter Chocolate Rust
Species group:
fungus
Kingdom:
Fungi
Order:
Pucciniales
Family:
Pucciniaceae
Records on NatureSpot:
36
First record:
14/04/2017 (lemmon, roy)
Last record:
12/04/2026 (Bell, Melinda)

Total records by month

% of records within its species group

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