Laetisaria lichenicola


The lichenicolous fungus Laetisaria lichenicola grows immersed within the thallus of Physcia adscendens and Physcia tenella, turning its host pink. When spores are being produced the infected areas look minutely frosted. The host tissue can degrade into a shiny cellophane-like film.

Similar Species

Illosporiopsis christensenii forms bright pink blobs composed of coiled spores. These can stain the surface of lichens when the blobs start to wash away after rain. Erythricium aurantiacum can leave a pink stain after the bulbils have dispersed.

Identification difficulty
Recording advice

Please include a photograph to support your record. Microscopic examination is often necessary.


Where the hosts, Physcia adscendens and Physcia tenella occur.

When to see it

All year.

UK Status

Scattered throughout England. Known in Scotland and Wales.

VC55 Status

Status in Leicestershire and Rutland not known.

Leicestershire & Rutland Map


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

UK Map