https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:711295-1

https://www.catalogueoflife.org/data/taxon/3KF95

When I committed the taxon swap from Helleborus argutifolius to Helleborus lividus corsicus in 2018 the accepted name on POWO/COL for this taxon was Helleborus lividus subsp. corsicus:

https://www.inaturalist.org/taxon_changes/42774

Meanwhile Helleborus argutifolius Viv. is accepted at species level.