Home Fungi Fungal galls, other rusts, leaf spots, etc Other rusts, leaf spots, sooty moulds Melampsora lini

Melampsora lini

Flax rust

This is a plant parasite that produces bright or dark spore-holding pustules on the stems and leaves of species of Linum. Bright yellow asexual spores and black sexual spores are produced at at different stages of this rust's life cycle and the pustules rupture to release the spores. The authors of the paper listed below illustrate and explain the life cycle on pages 350-352.


This is an introduced species and by 1906 (see the McAlpine reference) had been reported from NSW, SA, Tasmania and Victoria.



This rust is distinctive as long as you know that the host is a species of Linum. Different rusts produce similarly coloured spores on other plant genera.



G. J. Lawrence, P. N. Dodds & J. G. Ellis, 2007, Rust of flax and linseed caused by

Melampsora lini, Molecular Plant Pathology, 8, 349–364.

D. McAlpine, 1906, The rusts of Australia, Government Printer, Melbourne.

Melampsora lini is listed in the following regions:

Canberra & Southern Tablelands

Page 1 of 1 - image sightings only

Melampsora lini (Flax rust) at Macquarie, ACT - 11 Nov 2021 by Heino1
Melampsora lini (Flax rust) at Macquarie, ACT - 11 Nov 2021 by Heino1

Species information

  • Melampsora lini Scientific name
  • Flax rust Common name
  • Not Sensitive
  • Exotic
  • Unknown
  • Machine learning

Follow Melampsora lini

Receive alerts of new sightings


Location information

2,099,952 sightings of 19,113 species in 5,077 locations from 10,185 contributors
CCA 3.0 | privacy
We acknowledge the Traditional Owners of this land and acknowledge their continuing connection to their culture. We pay our respects to their Elders past and present.