| Senecio aquaticus | GB, VC70 Cumberland, Derwent Water | M D Ryley | | 22/7/1959 | ABS |
| Senecio aquaticus | GB, VC70 Cumberland, Keswick | William Robert Sherrin | William Robert Sherrin | 8/1933 | SLBI |
| Senecio aquaticus | GB, VC70 Cumberland, Thirlmere | Augustin Ley | | 7/9/1871 | BIRM |
| Senecio aquaticus | GB, VC97 West Inverness-shire, Fort William | | Douglas Montague Heath | 7/1912 8/1912 | BIRM |
| Senecio aquaticus | IE, Ambiguous locality (IE), Killarney | Frederick Townsend | Frederick Townsend | | SLBI |
| Senecio aquaticus subsp. aquaticus | GB, VC13 West Sussex, Lurgashall | Joseph Edward Little | Watson Botanical Exchange Club Harold Stuart Thompson | 16/8/1929 to 6/8/1930 | BIRM |
| Senecio aquaticus subsp. aquaticus | GB, VC13 West Sussex, North Chapel | Joseph Edward Little Rowland John Burdon | Watson Botanical Exchange Club Harold Stuart Thompson | 8/1929 | BIRM |
| Senecio aquaticus subsp. erraticus | GB, VC11 South Hampshire, Holmsley | George Claridge Druce | Botanical Exchange Club of The British Isles Charles Edward Britton George Claridge Druce | 8/1929 | SLBI |
| Senecio aquaticus subsp. erraticus | GB, VC11 South Hampshire, Holmsley Station | Job Edward Lousley | Job Edward Lousley | 11/8/1929 | SLBI |
| Senecio aquaticus subsp. pennatifidus | GB, VC2 East Cornwall, The Moors, Lostwithiel | Allan Octavian Hume | Allan Octavian Hume | 19/6/1901 | SLBI |
| Senecio cineraria | Dublin, Killiney Bay | Nathaniel Colgan | Allan Octavian Hume Nathaniel Colgan | 24/6/1902 | SLBI |
| Senecio cineraria | GB, VC1 West Cornwall, Newquay | Chambre Corker Vigurs | Botanical Exchange Club of The British Isles Augustin Ley | 25/6/1908 | BIRM |
| Senecio cineraria | GB, VC3 South Devon, Budleigh Salterton | Isaac A Helsby | Isaac A Helsby | 3/9/1925 | SLBI |
| Senecio cineraria | GB, VC3 South Devon, Budleigh Salterton | Harold Stuart Thompson | Harold Stuart Thompson | | BIRM |
| Senecio cineraria | GB, VC3 South Devon, Plymouth Cultivated | Robert Large Baker | Robert Large Baker | 9/1878 | BIRM |
| Senecio cineraria | GB, VC3 South Devon, Torquay | Henry Boyden | William Robert Sherrin | | SLBI |
| Senecio cineraria | GB, VC3 South Devon, Torquay | George Claridge Druce | Harold Stuart Thompson | 7/1903 | BIRM |
| Senecio cineraria | GB, VC3 South Devon, Torquay | W Herridge | Allan Octavian Hume | 16/7/1907 | SLBI |
| Senecio cineraria | GB, VC3 South Devon, Torquay | W Herridge | Allan Octavian Hume | 16/7/1907 | SLBI |
| Senecio cineraria | GB, VC3 South Devon, Daddy Hole GB, VC3 South Devon, Torquay Cultivated | Augustin Ley | Augustin Ley | 13/7/1907 | BIRM |
| Senecio cineraria | GB, VC3 South Devon, Torquay | Ernest William Swanton | Allan Octavian Hume | 20/6/1907 | SLBI |
| Senecio cineraria | GB, VC3 South Devon, Torquay | Charles Waterfall | | 29/6/1929 | SLBI |
| Senecio cineraria | GB, VC3 South Devon, Torquay, Meadfoot | Job Edward Lousley | | 2/8/1922 | SLBI |
| Senecio cineraria | GB, VC5 South Somerset, Culbone | G White | | 8/1907 | SLBI |
| Senecio cineraria | GB, VC5 South Somerset, Porlock | Stafford Edwin Chandler | Croydon Natural History and Scientific Society Stafford Edwin Chandler | 6/8/1943 | SLBI |
| Senecio cineraria | GB, VC9 Dorset, Langton Herring | Stafford Edwin Chandler | Croydon Natural History and Scientific Society | 12/8/1935 | SLBI |
| Senecio cineraria | GB, VC9 Dorset, Swanage | Edward Charles Wallace | Edward Charles Wallace Job Edward Lousley | 18/6/1933 | SLBI |
| Senecio cineraria | GB, VC10 Isle of Wight, Shanklin | | Douglas Montague Heath | 28/6/1918 | BIRM |
| Senecio cineraria | GB, VC14 East Sussex, Eastbourne | Allan Octavian Hume | Allan Octavian Hume | 7/9/1907 | SLBI |
| Senecio cineraria | GB, VC113 Channel Islands, Jersey, Saint Aubins | Augustin Ley | Augustin Ley | 26/6/1883 | BIRM |
| Senecio cineraria | GB, VC113 Channel Islands, Jersey, St Aubin's | Ariste | Botanical Exchange Club of The British Isles Job Edward Lousley Louis Arsene | 18/6/1927 | SLBI |
| Senecio cineraria | GB Cultivated GB, VC3 South Devon, Torquay | | Augustin Ley | 13/7/1907 | BIRM |
| Senecio cineraria | IE, VCH21 Co. Dublin, Dalkey | Nathaniel Colgan | Allan Octavian Hume | 7/7/1902 | SLBI |
| Senecio cineraria | IE, VCH21 Co. Dublin, Dalkey | Herbert Stanley Redgrove | Job Edward Lousley Herbert Stanley Redgrove | 31/7/1935 | SLBI |
| Senecio cineraria | IE, VCH21 Co. Dublin, Killiney Bay | Nathaniel Colgan | Allan Octavian Hume | 24/6/1902 | SLBI |
| Senecio cineraria x jacobaea = S. x albescens | GB, VC1 West Cornwall, Newquay | Allan Octavian Hume | Allan Octavian Hume | 17/7/1901 | SLBI |
| Senecio cineraria x jacobaea = S. x albescens | GB, VC3 South Devon, Budleigh Salterton | Harold Stuart Thompson | Harold Stuart Thompson | | BIRM |
| Senecio cineraria x jacobaea = S. x albescens | GB, VC29 Cambridgeshire, Cambridge Cultivated | | Watson Botanical Exchange Club Allan Octavian Hume | 7/1904 | SLBI |
| Senecio cineraria x jacobaea = S. x albescens | GB, VC29 Cambridgeshire, Cambridge Botanic Gardens Cultivated IE, VCH21 Co. Dublin, Dalkey | Albert John Hosking | Watson Botanical Exchange Club Albert John Hosking Edward Cleminshaw | 1903 to 7/1904 | BIRM |
| Senecio cineraria x jacobaea = S. x albescens | GB, VC36 Herefordshire, Brampton Abbotts | Augustin Ley | Augustin Ley | 11/8/1909 to 11/9/1909 | BIRM |