| Mentha suaveolens x longifolia = M. x rotundifolia | VC1, Trewoofe | Richard Barker Ullman | Richard Barker Ullman | 30/8/1929 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC28 West Norfolk, Wells GB, VC36 Herefordshire, Ledbury Cultivated | Spencer Henry Bickham | Watson Botanical Exchange Club Spencer Henry Bickham William Robert Sherrin | 20/8/1909 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Bissoe | Job Edward Lousley | Job Edward Lousley | 14/9/1936 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Crantock | Chambre Corker Vigurs | | 31/8/1905 | ABS |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Cubert | Chambre Corker Vigurs | | 31/8/1905 | ABS |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Gunwalloe | Langley Kitching | | 28/7/1881 | BIRM |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Gwennap | Frederick Hamilton Davey | Watson Botanical Exchange Club Charles Bailey | 23/8/1911 | MANCH |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Lamorna Cove | William Curnow | Charles Bailey | 9/1889 | MANCH |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Lilant | | Schill | 22/8/1912 | MANCH |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Penzance | William Curnow | Charles Bailey | 8/1879 | MANCH |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Penzance | William Curnow | Charles Bailey | 27/8/1875 | MANCH |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Penzance | William Curnow | William Hunt Painter | 8/1879 | ABS |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Penzance Cultivated | William Curnow | William Hunt Painter | 9/1880 | ABS |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Penzance | William Curnow | Hugh Neville Dixon Leslie Beeching Hall | 8/1886 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Perranwell Station | Allan Octavian Hume | Allan Octavian Hume | 23/8/1899 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Ponsanooth | Frederick Hamilton Davey | Allan Octavian Hume | 28/8/1900 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC1 West Cornwall, Trewoofe | Richard Barker Ullman | Richard Barker Ullman | 30/8/1929 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, Charlestown | William Robert Sherrin | | 7/1921 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, East Looe | Allan Octavian Hume | Allan Octavian Hume | 31/8/1900 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC17 Surrey, Kew Cultivated GB, VC2 East Cornwall, Egloshayle | J Fraser | Job Edward Lousley Mary Louisa Wedgwood | 17/8/1931 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, Looe | Allan Octavian Hume | Allan Octavian Hume | 29/7/1900 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, Par | William Robert Sherrin | | 7/1921 | SLBI |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, Par | Harold Stuart Thompson | | 21/8/1921 | BIRM |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, Pentewan | Allan Octavian Hume | Allan Octavian Hume | 13/8/1901 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, Pentewan | Allan Octavian Hume | Allan Octavian Hume | 13/8/1900 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, Pentewan | Allan Octavian Hume | Allan Octavian Hume | 4/9/1901 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, Pentewan | Allan Octavian Hume | Allan Octavian Hume | 4/9/1901 | SLBI |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, Sheviock | T Clark | | 18/9/1856 | BIRM |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, Tintagel | Charles Baylis Green | Charles Baylis Green | 9/1905 | SLBI |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC2 East Cornwall, Withiel | Richard Vercoe Tellam | | 1875 | BIRM |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, Cornwall, Cornwall | Elizabeth Anne Lomax | | 9/1873 | MANCH |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC3 South Devon | George Ralph Tate | Charles Bailey John Harbord Lewis | 8/1871 | MANCH |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC3 South Devon | William Booth Waterfall | Charles Bailey | 8/1878 | MANCH |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC3 South Devon, Ashburton | John Ralfs | Charles Bailey William Lowndes Notcutt | 9/1836 | MANCH |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC3 South Devon, Ashburton | | John Ralfs | 9/1836 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC3 South Devon, Brent | Edward Palmer | William Hadden Beeby | 22/8/1836 | SLBI |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC3 South Devon, Dartmouth | C Lake | | 8/1846 | BIRM |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC3 South Devon, Devonport | Edward Palmer | William Hadden Beeby | 7/1836 | SLBI |
| Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC3 South Devon, Kingsbridge | Stafford Edwin Chandler | Croydon Natural History and Scientific Society Stafford Edwin Chandler | 12/9/1921 | SLBI |
+ | Mentha suaveolens x longifolia = M. x rotundifolia | GB, VC3 South Devon, Plymouth | Francis Henry Goulding | Charles Bailey | 9/1846 | MANCH |