Beech Tarcrust - Biscogniauxia nummularia
A dark greyish-black, flat crust on recently dead or felled Beech trees. The stroma erupt through the bark and the peeled-back bark remains as fragments around the stroma. There are small conical pores or ostioles, through which the spores are eventually ejected.
The Common Tarcust Diatrype stigma occurs mainly on oak. There are several other species of tarcust.
Photograph in its habitat, and close up to show pores; note substrate and associated tree species.
Mainly on recently dead or felled Beech trees
All year round
Melinda Bell
Nanpantantan,The Outwoods
03 March 2024
on Beech
Melinda Bell
Beacon Hill Country park
18 March 2024
on Beech
David Nicholls
Ulverscroft NR
20 April 2022
on Beech
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Species profile
- Common names
- Beech Tarcrust
- Species group:
- fungus
- Kingdom:
- Fungi
- Order:
- Xylariales
- Family:
- Graphostromataceae
- Records on NatureSpot:
- 8
- First record:
- 05/05/2005 (Nicholls, David)
- Last record:
- 18/03/2024 (Bell, Melinda)
Total records by month
% of records within its species group
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Latest images
Latest records
David Nicholls
Martinshaw Wood
12 November 2011
David Nicholls
Martinshaw Wood
05 May 2005
