Clustered Bonnet – Mycena inclinata

Fungi of the Week

13th March 2020 | Info

Common name: Clustered bonnet/Oak bonnet 

Scientific name: Mycena inclinata 

Introduction: The Clustered bonnet (Mycena inclinata) is a UK-native fungus that is commonly found on oak roots. It has a strong scent and typically grows in clusters. 


Cap: The caps of a clustered bonnet are relatively small and begin conical. As the fungus then matures; the cap develops into more of a bell-like appearance before concluding with an umbonate-shape. They typically vary in colour from grey to a greyish brown with lines that lead to a reddish-brown centre. They are also smooth and have a crenellated margin. 

Gills: Their gills are adnate and white, eventually turning to a pinkishgrey colour.  

Stem: The clustered bonnet has long reddish-brown stems that get lighter towards the cap. 

Spores: Smooth and ellipsoidal. 


The clustered bonnet forms in late summer to late autumn on dead oak timber ranging room oak roots, stumps, fallen trunks/branches or on dead sections of currently standing trees. 

Impact on Trees

This fungus is saprobic.

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