Dog Sick Slime Mould - Mucilago crustacea


The fruiting body matures through yellow to become white, its interior finally blackening with age. The newly emerged plasmodia resembles a dog?s vomit on the grass but within 24 hours the calcareous cortex has hardened and the black spore mass has matured.

Identification difficulty

Usually on grass.

When to see it

September is the peak month.

Life History

This slime mould moves slowly to new food.

UK Status

Widespread and fairly frequent in Britain.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

Leicestershire & Rutland Map


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

UK Map