| Mentha longifolia | GB, VC1 West Cornwall, Ellenglaze | Chambre Corker Vigurs | | 31/8/1905 | ABS |
| Mentha spicata x suaveolens = M. x villosa | GB, VC1 West Cornwall, Feock | Frederick Hamilton Davey | Frederick Hamilton Davey | 9/9/1907 | CGE |
| Mentha x cordifolia | GB, VC1 West Cornwall, Feock,Carnon Downs | Frederick Hamilton Davey | Watson Botanical Exchange Club Albert Bruce Jackson Frederick Hamilton Davey | 9/10/1907 | K |
| Mentha spicata x suaveolens = M. x villosa var. alopecuroides | GB, VC1 West Cornwall, Gilly Treasamble, Gwennap | Chambre Corker Vigurs Frederick Hamilton Davey | Chambre Corker Vigurs | 14/10/1905 | ABS |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Gilly Tresamble | Catherine Muriel Rob Thomas Jackson Foggitt | Joseph Norman Frankland | 17/9/1926 | LIV |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Goonbell Halt | Job Edward Lousley | Job Edward Lousley | 14/9/1936 | SLBI |
| Mentha spicata | GB, VC1 West Cornwall, Goonbell Halt | Job Edward Lousley | Job Edward Lousley | 14/9/1936 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Goonhavern | Chambre Corker Vigurs | Frederick Hamilton Davey | 1/9/1912 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Goonhavern | Chambre Corker Vigurs | Watson Botanical Exchange Club Joseph Edward Little Frederick Hamilton Davey | 9/1912 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Goonhavern | Chambre Corker Vigurs | | 1/9/1912 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Gwennap | Frederick Hamilton Davey Spencer Henry Bickham | Spencer Henry Bickham | 1/10/1904 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Gwennap | Cyril West | | 9/1948 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Gwennap | Frederick Hamilton Davey | Frederick Hamilton Davey | 30/8/1911 | CGE |
| Mentha spicata | GB, VC1 West Cornwall, Gwennap | Henry Herbert Harvey | Edgar Thurston | 13/9/1920 | K |
| Mentha spicata x suaveolens = M. x villosa | GB, VC1 West Cornwall, Gwennap | Frederick Hamilton Davey | Frederick Hamilton Davey | 24/8/1911 | CGE |
| Mentha spicata x suaveolens = M. x villosa | GB, VC1 West Cornwall, Gwennap | Frederick Hamilton Davey | | 30/8/1911 | CGE |
| Mentha spicata x suaveolens = M. x villosa | GB, VC1 West Cornwall, Gwennap | Frederick Hamilton Davey | Frederick Hamilton Davey | 30/8/1911 | CGE |
| Mentha spicata | GB, VC1 West Cornwall, Gwithian | William Curnow | William Hunt Painter | 9/1880 | ABS |
| Mentha pulegium var. erecta | GB, VC1 West Cornwall, Hayle | Edgar A Rees | | 7/1925 | LAUS |
| Mentha aquatica | GB, VC1 West Cornwall, Hayle, Carwin Moor | Allan Octavian Hume | Allan Octavian Hume | 4/9/1901 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Hea Moor | Job Edward Lousley | Job Edward Lousley | 17/9/1936 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Helston | James Cunnack | William Hadden Beeby | 8/1878 | SLBI |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Helston | James Cunnack | Botanical Exchange Club of The British Isles John Durbin Gray | 9/1881 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Helston | John Ralfs | Charles Cardale Babington | 26/8/1878 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Cyril West | | 9/1946 | CGE |
| Mentha aquatica x spicata = M. x piperita | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Cyril West | | 9/1948 | CGE |
| Mentha arvensis x aquatica x spicata = M. x smithiana | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Frederick Hamilton Davey | Allan Octavian Hume Frederick Hamilton Davey | 30/8/1911 | SLBI |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Frederick Hamilton Davey | Frederick Hamilton Davey Henry Elliott Fox | 30/8/1911 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Frederick Hamilton Davey | Watson Botanical Exchange Club Frederick Hamilton Davey George Claridge Druce | 30/8/1911 | OXF |
| Mentha arvensis x spicata = M. x gracilis | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Frederick Hamilton Davey | Frederick Hamilton Davey | 30/8/1911 | CGE |
| Mentha spicata | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Frederick Hamilton Davey | Allan Octavian Hume | 4/10/1907 | SLBI |
| Mentha spicata | GB, VC1 West Cornwall, Hick's Mill, Gwennap | William Charles Barton | Albert Bruce Jackson William Charles Barton | 19/8/1911 | K |
| Mentha x cordifolia | GB, VC1 West Cornwall, Hick's Mill, Gwennap | Frederick Hamilton Davey | Watson Botanical Exchange Club Albert Bruce Jackson Frederick Hamilton Davey | 24/8/1911 | K |
| Mentha x piperita | GB, VC1 West Cornwall, Holywell Bay | Edgar Thurston | Edgar Thurston | 22/8/1916 | K |
| Mentha spicata | GB, VC1 West Cornwall, Isles of Scilly | | | | K |
| Mentha pulegium | GB, VC1 West Cornwall, Kennall Valley | Allan Octavian Hume | Allan Octavian Hume | 8/8/1899 | SLBI |
| Mentha x maximilianea | GB, VC1 West Cornwall, Kingswear | John Kenneth Morton | John Kenneth Morton | 8/1955 | K |
| Mentha aquatica x spicata = M. x piperita var. citrata | GB, VC1 West Cornwall, Lamorna | William Curnow | | 8/1879 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Lamorna | Richard Barker Ullman | Richard Barker Ullman | 1912 to 1913 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC1 West Cornwall, Lamorna | Richard Barker Ullman | Richard Barker Ullman | 1912 to 1913 | SLBI |