Porina hibernica
Key Details
| Taxonomic Groups: | Fungus or lichen > lichen > Lichen |
| Red List Status: | Near Threatened (Not Relevant) [NT(nr)] |
| D5 Status: | Included in the baseline Red List Index for England (Wilkins, Wilson & Brown, 2022) |
| Section 41 Status: | (not listed) |
| Taxa Included Synonym: | (none) |
| UKSI Recommended Name: | Porina hibernica |
| UKSI Recommended Authority: | P. James & Swinscow |
| UKSI Recommended Qualifier: | (none specified) |
| Red List Citation: | Woods & Coppins, 2012 |
| Notes on taxonomy/listing: | (none) |
Criteria
| Question 1: | Does species need conservation or recovery in England? |
| Response: | Yes |
| Justification: | Restricted to a small number of sites in S England, with c90% in the New Forest. Significant regional loses due to tree disease and sites threatened by increased shade in woodlands. |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | Yes |
| Justification: | A rare woodland specialist. Occurs on moderately flushed base-rich bark of mature Quercus, rarely Fagus, in shelter and humid old growth woodland, sometimes overgrowing bryophytes (BLS, 2025).Threats likely to require targeted action. |
| Question 3: | At a landscape scale, would the species benefit from untargeted habitat management to increase habitat mosaics, structural diversity, or particular successional stages? |
| Response: | Yes |
| Justification: | Part of a large group of species threatened by under grazing of old growth woodlands. Likely to benefit from diverse woodland structure, especially sheltered glades. |
Species Assessment
| Current step on the Species Recovery Curve (SRC): | 4. Autecology and pressures understood |
| Recovery potential/expectation: | Unknown |
| National Monitoring Resource: | Opportunistic - insufficient |
| Species Comments: | Past confusion with other similar isidiate species exists and records require full confirmation. Decline is difficult to determine as mainly recorded accurately only in recent decades but there are significant regional loses to tree disease and sites threatened by increased shade in woodlands. Listed as EN in draft GB red list. |
Key Actions
Key Action 1
Proposed Action: Review records, both herbaria and in the field where necessary, to establish status in England. Consider using DNA analysis.
Action targets: 3. National Monitoring Plan agreed and implemented
Action type: Status survey/review
Duration: 2 years
Scale of Implementation: ≤ 50 sites
High priority sites:
Comments:
Key Action 2
Proposed Action: Produce a species dossier to collate information on current and historic sites, including results of surveys and assessment of threats and remedial actions.
Action targets: 4. Autecology and pressures understood
Action type: Scientific research
Duration: 1 year
Scale of Implementation: ≤ 50 sites
High priority sites:
Comments:
Key Action 3
Proposed Action: Advise and support site owners and managers to implement the site-level actions identified in A2.
Action targets: 7. Best approach adopted at appropriate scales
Action type: Advice & support
Duration: 6-10 years
Scale of Implementation: ≤ 50 sites
High priority sites:
Comments:
Acknowledgment:
Data used on this website are adapted from Threatened species recovery actions 2025 baseline (JP065): Technical report and spreadsheet user guide (Natural England, 2025). Available here.