Puccinia cnici-oleracei

Description

Puccinia cnici-oleracei is a rust fungus that affects the leaves of Marsh Thistle (Cirsium palustre) in VC55, and on Melancholy Thistle (Cirsium heterophyllum) in other areas. There is no host alternation, and only the dark-brown telia are found, on slightly thickened yellowish spots.  

Also occurs on other plants in the Asteraceae (e.g. Yarrow, Ox-eye Daisy) but is probably not a gall-causer of these species (ref. Redfern & Shirley 2023)

Identification difficulty
Habitat

Wherever the host plants occur.

When to see it

When the host species are in leaf.

UK Status

Widespread and fairly frequent in Britain.

VC55 Status

Status in Leicestershire and Rutland not known.

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map

Species profile

Species group:
Fungi
Kingdom:
Fungi
Order:
Pucciniales
Family:
Pucciniaceae
Records on NatureSpot:
6
First record:
07/07/2016 (Grimes, Martin)
Last record:
04/10/2022 (lemmon, roy)

Total records by month

% of records within its species group

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