Bonnet Mould - Spinellus fusiger

Description

A parasitic mould that grow on fungi in the genus Mycena or Collybia.  The caps of the host fungus are invaded by the Spinellus mycelium, eventually breaking through with a fuzzy mass of 'pins'.  These are made up of sporangiophores (the stalks)  each terminating in a minute spherical sporangia, which contain the spores. 

Similar Species

Two other species of Spinellus are on the UK checklist of fungi

Identification difficulty
Recording advice

For certainty, the specimen should be examined with a microscope or confirmed by an expert. Photograph the mould on the host fungus, and identify host if possible.  

Habitat

Mycena (Bonnets) or Collybia

When to see it

Autumn.

Leicestershire & Rutland Map

MAP KEY:

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

UK Map

Species profile

Common names
Bonnet Mould
Species group:
fungus
Kingdom:
Fungi
Order:
Mucorales
Family:
Phycomycetaceae
Records on NatureSpot:
2
First record:
09/10/2022 (N, Matt)
Last record:
06/11/2022 (Bell, Melinda)

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