Toothless Hawkweed (Hieracium integratum)
Key Details
| Taxonomic Groups: | Vascular plant > flowering plant > Herbaceous plant |
| Red List Status: | Endangered (Not Relevant) [EN(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: | Hieracium pseudintegratum |
| UKSI Recommended Authority: | McCosh |
| UKSI Recommended Qualifier: | (none specified) |
| Red List Citation: | in Stroh et al., 2014 |
| Notes on taxonomy/listing: | Since split into H. pseudintegratum and H. arnsidense (McCosh 2015), here assessed combined, each with only one site. Note UKSI refers H.integratum only to the former. |
Criteria
| Question 1: | Does species need conservation or recovery in England? |
| Response: | Yes |
| Justification: | Both species included under H. integratum are so rare and Critically Endangered that a recovery programme is needed to ensure both survive. H. pseudintegratum reduced from frequent on Ingleborough NNR to 12 plants in 2017 (Rich et al. 2018). Only 11 H. arnsidense plants in 2022 but hard to know if declining (Rich 2025 in press). |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | Yes |
| Justification: | Both very vulnerable. Should be considered for targeted restocking programme. Seed of both species held in Millennium Seed Bank. |
| 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: | H. pseudintegratum would benefit reduction in grazing at landscape scale in Yorkshire Dales. |
Species Assessment
| Current step on the Species Recovery Curve (SRC): | 5. Remedial action identified |
| Recovery potential/expectation: | Medium-high |
| National Monitoring Resource: | Opportunistic - insufficient |
| Species Comments: | Note taxon split in col. P. Few specialist hawkweed surveyors, but detailed data available. |
Key Actions
Key Action 1
Proposed Action: Consider targeted restocking programmes for each species at Ingleborough NNR and Arnside Knott.
Action targets: 5. Remedial action identified
Action type: (Re-)introduction
Duration: 3-5 years
Scale of Implementation: ≤ 5 sites
High priority sites: Ingleborough NNR and Arnside Knott
Comments:
Key Action 2
Proposed Action: Removal of invasive Cotoneaster at Arnside Knott
Action targets: 5. Remedial action identified
Action type: Habitat management
Duration: 1 year
Scale of Implementation: 1 site
High priority sites: Arnside Knott
Comments:
Key Action 3
Proposed Action: Promote awareness of the group amongst landowners, understanding of conservation requirements amongst conservation professionals and identification skills amongst field botanists e.g. via BSBI training resources and workshops
Action targets: 5. Remedial action identified
Action type: Advice & support
Duration: 3-5 years
Scale of Implementation: ≤ 100 sites
High priority sites:
Comments: generic action
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.