Calicium adspersum
Description
Characterised (in common with related species) by tiny stalked apothecia, like small pins, up to 1mm tall. The thallus is granular, grey and the apothcia are black with yellow pruina on the head an margin.

Photo- U. Kirschbaum
Habitats
On dry bark of old Quercus in parkland.
Distribution
Europe, Asia , N. America. Also as subsp. australe in S. America, Australia, New Zealand. S. England (Oxford) and one site
Records from Wales
| Location | Grid Reference | Last Rec'd | Recorder(s) | SSSI |
| Montgomery: Gregynog Great Wood | SO 084 977 | 1996 | R.G. Woods & B.J. Coppins | Yes |
Hectad Distribution in Wales/NBN Gateway Map
(Be aware that the data on the Gateway may be incomplete and the maps should not therefore be relied upon as a full representation of the distribution of this species. Note that the maps coverage includes some parts of England. Also, without a registered account on the Gateway your access to datasets may be limited)
Proposed Actions
UK BAP Signposting Actions:
- Search the last known sites in Oxfordshire and Montgomery. Sites are likely to require an abundance of veteran oak and adequate replacement trees.
- Research existing knowledge on the habitat requirements and threats to this species in Europe, to inform refinding and conserving this species in UK