| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Goathurst | David Guthrie Catcheside | Watson Botanical Exchange Club David Guthrie Catcheside Job Edward Lousley | 27/8/1925 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Hestercombe | Edward Shearburn Marshall | | 16/8/1906 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Kings Brompton | Edward Shearburn Marshall | Spencer Henry Bickham | 9/9/1907 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Minehead | Edward Shearburn Marshall | Edward Francis Linton | 20/9/1906 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Monkton Heathfield | Edward Shearburn Marshall | Spencer Henry Bickham | 16/8/1906 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Taunton | Harold Stuart Thompson | Harold Stuart Thompson | 8/1915 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Triscombe | John Patrick Micklethwait Brenan | | 23/9/1957 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Triscombe | John Patrick Micklethwait Brenan | John Patrick Micklethwait Brenan | 23/9/1957 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Wills Neck, Quantock | Harold Stuart Thompson | Harold Stuart Thompson | 19/8/1915 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC5 South Somerset, Wiveliscombe | Edward Shearburn Marshall | | 12/8/1916 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Asham Wood | Peter Francis Hunt | Peter Francis Hunt | 30/8/1956 | K |
| Mentha x verticillata var. rivalis | GB, VC6 North Somerset, Ball Wood, Wungton | Ida Mary Roper | Botanical Exchange Club of The British Isles Charles Edward Britton Ida Mary Roper | 3/9/1918 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Barrow Gurney Reservoirs | Harold Stuart Thompson | Harold Stuart Thompson | 6/10/1933 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Bath | Charles Cardale Babington | John Stevens Henslow | 9/1833 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Bath Cultivated | William Sole | Carlisle Museum Herbarium Samuel Goodenough | | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Batheaston | | Lester Vallis Lester-Garland | 28/7/1926 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, blagdon reservoir | Harold Stuart Thompson | Harold Stuart Thompson | 19/8/1937 | BIRM |
| Mentha x verticillata var. rivalis | GB, VC6 North Somerset, Brewham | Frederick Kirkwood Makins | | 8/1936 | K |
| Mentha x verticillata var. rivalis | GB, VC6 North Somerset, Brewham | Frederick Kirkwood Makins | | 8/1936 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Chew Magna | Harold Stuart Thompson | Harold Stuart Thompson | 4/10/1933 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Chew Magna Reservoir | Harold Stuart Thompson | Harold Stuart Thompson | 15/9/1933 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Chewton Mendip | Harold Stuart Thompson | Harold Stuart Thompson | 22/8/1935 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Claverton Wood | | Charles Cardale Babington | 9/1833 | CGE |
+ | Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Clevedon | John Wilson Rimington | Charles Bailey John Wilson Rimington | 1842 | MANCH |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Compton Dando | James Walter White | J Fraser | 1/9/1925 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Compton Dando | David Fry | William Hunt Painter | 10/9/1887 | ABS |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Compton Dando | James Walter White | James Walter White William Hunt Painter | 13/9/1887 | ABS |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Compton Dando | James Walter White | Spencer Henry Bickham | 1/9/1925 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Compton Dando | James Walter White | Joseph Edward Little | 1/9/1925 | CGE |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Keynsham | Harold Stuart Thompson | Harold Stuart Thompson | 13/9/1932 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Newton St Loe | Ida Mary Roper | Watson Botanical Exchange Club Harold Stuart Thompson Ida Mary Roper | 13/9/1916 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Pensford | Harold Stuart Thompson | Harold Stuart Thompson | 6/9/1935 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Rowberrow | James Walter White | Charles Edward Britton | 23/8/1903 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Shapwick | Ida Mary Roper | Watson Botanical Exchange Club Ida Mary Roper | 25/8/1926 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Sharpham Moor | Harold Stuart Thompson | Harold Stuart Thompson | 25/8/1934 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Sharpham Moor | Harold Stuart Thompson | Botanical Exchange Club of The British Isles Harold Stuart Thompson | 25/8/1934 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Sharpham Moor | Harold Stuart Thompson | Harold Stuart Thompson | 25/8/1934 | SLBI |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Sharpham Moor | Harold Stuart Thompson | Harold Stuart Thompson | 26/8/1934 | BIRM |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Street | Victor Samuel Summerhayes | | 10/8/1915 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC6 North Somerset, Street | Clifford Charles Townsend | Clifford Charles Townsend | 21/8/1952 | K |