A Tooth Fungus (Hydnellum scabrosum)
Key Details
| Taxonomic Groups: | Fungus or lichen > fungus > Fungus |
| Red List Status: | (Not Relevant) [(not listed)(nr)] |
| D5 Status: | |
| Section 41 Status: | (not listed) |
| Taxa Included Synonym: | Sarcodon scabrosus agg. |
| UKSI Recommended Name: | Hydnellum scabrosum |
| UKSI Recommended Authority: | (Fr.) E. Larss., K.H. Larss. & Kõljalg |
| UKSI Recommended Qualifier: | (none specified) |
| Red List Citation: | (not listed) |
| Notes on taxonomy/listing: | in s41 as Sarcodon scabrosus |
Criteria
| Question 1: | Does species need conservation or recovery in England? |
| Response: | Yes |
| Justification: | Previous assessments negated by recent taxonomic changes, but stipitate hydnoids appear to be in general decline |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | Yes |
| Justification: | Without evidence of the current national status of this species it will be very difficult to assess if there are any other species-specific actions required for its conservation; or if it is need of conservation at all. |
| 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: | Structural diversity in the habitat has been to shown to affect if and where this species produces fruitbodies. While it is not known whether the fungus is responding to a negative (edge of territory) or positive (break In vegetation) stimulus, this species usually fruits along river banks, well-beaten paths or other breaks in the woodland habitat. |
Species Assessment
| Current step on the Species Recovery Curve (SRC): | 2. Biological status assessment exists |
| Recovery potential/expectation: | Low - Policy conflict (detail in comments) |
| National Monitoring Resource: | Combination - insufficient |
| Species Comments: | This species has recently been split between specimens associating with pine and specimens associating with fagus. Any attempts at Species recovery are likely to be hampered by high levels of atmospheric nitrogen deposition, this is a policy conflict due to demands of industry and agriculture. |
Key Actions
Key Action 1
Proposed Action: An assessment of the necessary national species records should be made according to IUCN guidelines to provide a recognised redlist status criteria for this species.
Action targets: 2. Biological status assessment exists
Action type: Status survey/review
Duration: 1 year
Scale of Implementation: National
High priority sites: N/A
Comments: As no IUCN recognised assessment exists for this species, this action should be prioritised. Records for English specimens of H.scabrosum associating with Fagus should be considered as representative of H.fagiscabrosum.
Key Action 2
Proposed Action: Research into inoculation of saplings with mycorrhiza of this species
Action targets: 5. Remedial action identified
Action type: Scientific research
Duration: >10 years
Scale of Implementation: National
High priority sites: N/A
Comments: tree inoculation should be trialled. Successful inoculation would allow for rapid colonisation of new sites
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.