Blueing Bracket - Postia subcaesia

Alternative names
Cyanosporus subcaesius
Tyromyces subcaesius
Description

A small, annual polypore with whitish brackets that develop bluish colours as they age.  The cap has fine hairs and ridges.  The pores are rounded or elongated/maze-like, and small at 5 - 6 per mm. 

Similar Species

Postia caesia is similar but found on coniferous wood.  Postia alni is also present on deciduous wood and described as less hairy, but it is very hard to distinguish from P subcaesia. 

Identification difficulty

host/microscopy

Recording advice

Photograph upper and lower fertile surface to show pores; note host plant and substrate.  Identification by an expert from microscopic examination of a specimen is needed before submission to NatureSpot. 

Habitat

Deciduous wood

UK Status

Fairly frequent in England occasional elsewhere.

VC55 Status

Occasional in Leicestershire and Rutland.

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
Blueing Bracket
Species group:
Fungi
Kingdom:
Fungi
Order:
Polyporales
Family:
Dacryobolaceae
Records on NatureSpot:
6
First record:
30/09/2012 (Cooper, Barbara)
Last record:
06/11/2022 (Bell, Melinda)

Total records by month

% of records within its species group

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