22/10/2026
What is a slime mould?
It's not a plant, animal or even a fungi, although, similarly to fungi they do spend part of their lifecycle as 'fruiting bodies'. A big difference is that whilst fungi excretes enzymes to digest food, slime mould engulfs its food whole.
This slime mould is Fuligo septica, more commonly known as dog-sick slime mould. It can be seen during its active feeding stage, but is easier to spot when it reaches the end of its life cycle and becomes stationary to produce spores.
The yellow colour turns white as it dries out, revealing grey/black spores inside, ready to be dispersed by the wind.
Have you seen any this autumn?