Rhombic-leaved Hawkweed (Hieracium rhombicum)
Key Details
| Taxonomic Groups: | Vascular plant > flowering plant > Herbaceous plant |
| 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: | Hieracium rhombicum |
| UKSI Recommended Authority: | McCosh |
| UKSI Recommended Qualifier: | (none specified) |
| Red List Citation: | in Stroh et al., 2014 |
| Notes on taxonomy/listing: | Incorrectly named in base list as Hieracium rhomboides. |
Criteria
| Question 1: | Does species need conservation or recovery in England? |
| Response: | Yes |
| Justification: | British endemic, now classified as Data Deficient. Mostly in western Scottish mountains, with three sites in NE England. Probably under-recorded as it has had no targeted surveys, so basic data collection required to assess action and priorities. |
| Question 2: | Does recovery/ conservation depend on species-specific actions? |
| Response: | Yes |
| Justification: | Targeted survey required to determine native/introduced status and requirements for conservation. No seed 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: | No |
| Justification: | Unknown at this stage |
Species Assessment
| Current step on the Species Recovery Curve (SRC): | 2. Biological status assessment exists |
| Recovery potential/expectation: | Unknown |
| National Monitoring Resource: | Opportunistic - insufficient |
| Species Comments: | few specialist hawkweed surveyors |
Key Actions
Key Action 1
Proposed Action: Survey of all English sites to assess populations, and collect autecological data (vegetation niche, management) to assess conservation requirements.
Action targets: 2. Biological status assessment exists
Action type: Status survey/review
Duration: 2 years
Scale of Implementation: ≤ 20 sites
High priority sites:
Comments: Coordinate with similar survey in Scotland
Key Action 2
Proposed Action: Collect English seed for Millennium Seed Bank
Action targets: 5. Remedial action identified
Action type: Ex situ conservation
Duration: 1 year
Scale of Implementation: Unknown
High priority sites:
Comments: Coordinate with Millennium Seed Bank
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.