Uromyces junci

Description

A rust alternating between two hosts: the spermogonia and aecia affect Fleabane (Pulicaria dysenterica) and the uredinial/telial stages affect  rushes (Juncus spp.) . 

Orange-brown uredinia erupt from the stem, leaves and flower heads of the rush.  The telia are darker.

Identification difficulty

host

Recording advice

Photographs of the rust on the host.  You must record the host plant species.

Habitat

Primary host is a rush (Juncus); aecial host Fleabane. Marshland, wetland, water body margins

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

Species group:
fungus
Kingdom:
Fungi
Order:
Pucciniales
Family:
Pucciniaceae
Records on NatureSpot:
1
First record:
15/07/2025 (Timms, Sue)
Last record:
15/07/2025 (Timms, Sue)

Total records by month

% of records within its species group

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