Melampsora euphorbiae

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Alternative names
Spurge Rust
Description

This rust commonly causes galls on Petty Spurge and Sun Spurge, and occasionally on other species of Spurge. There is no host alternation.  Stems and leaves become distorted and thickened, with orange aecia on both leaf surfaces, petioles and stems.  Later, yellow uredinia are present on leaf underside; dark telia are occasional on Petty Spurge. 

Identification difficulty
When to see it

Late spring and summer.

UK Status

Widespread and fairly frequent in England and Wales.

VC55 Status

Status in Leicestershire and Rutland not known.

Further Information

See species page on the Fungi of Great Britain and Ireland website 

  • Graham Calow
    Sapcote, Harecroft Crescent
    15 April 2019
    on Petty Spurge (Euphorbia peplus)
  • Mike Higgott
    Anstey garden
    11 April 2020
  • Graham Calow
    Sapcote, Harecroft Crescent
    15 April 2019
    on Petty Spurge (Euphorbia peplus)
  • Mike Higgott
    Anstey garden
    27 May 2018
  • Mike Higgott
    Anstey garden
    27 May 2018
    on a Spurge
  • Mike Higgott
    Anstey garden
    03 April 2020

Leicestershire & Rutland Map

MAP KEY:

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

UK Map

Species data profile ?

Species profile

Common names
Spurge Rust
Species group:
Fungi
Kingdom:
Fungi
Order:
Pucciniales
Family:
Melampsoraceae
Records on NatureSpot:
39
First record:
27/04/2014 (Nicholls, David)
Last record:
01/03/2025 (Pugh, Dylan)

Total records by month

% of records within its species group

10km squares with records

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Latest images

Latest records

  • Graham Calow
    Sapcote, Harecroft Crescent
    15 April 2019
    on Petty Spurge (Euphorbia peplus)
  • David Nicholls
    Egleton, field edge
    31 October 2022
  • Mike Higgott
    Anstey garden
    27 May 2018
  • Mike Higgott
    Anstey garden
    03 April 2020
  • David Nicholls
    Ratby Church
    27 April 2014