| Stachys sylvatica x palustris = S. x ambigua | GB, VC21 Middlesex, Hampstead | Eyre Champion de Crespigny | Charles Bailey Eyre Champion de Crespigny | 1879 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC21 Middlesex, Hounslow | Frederick Townsend | Allan Octavian Hume Frederick Townsend | 8/1844 | SLBI |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC22 Berkshire, Chilswell | George Claridge Druce | Botanical Exchange Club of The British Isles Druce Herbarium, Oxford Charles Bailey | 1894 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC22 Berkshire, Chilswell | | Botanical Exchange Club of The British Isles Augustin Ley George Claridge Druce | 1894 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC23 Oxfordshire, Banbury | Harry Joseph Riddelsdell | | 2/9/1924 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC23 Oxfordshire, Bloxham | Harry Joseph Riddelsdell | Botanical Exchange Club of The British Isles Harry Joseph Riddelsdell | 9/8/1926 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC27 East Norfolk, Buxton | Robert James Mann | Benjamin Thompson Lowne | 1848 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC29 Cambridgeshire, Coton | William Williamson Newbould | Allan Octavian Hume Frederick Townsend | 26/7/1844 | SLBI |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC29 Cambridgeshire, Hayley | Frederick Townsend | Frederick Townsend | 7/1878 | SLBI |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC31 Huntingdonshire, Buckden | William Richardson Linton | Alfred Fryer Charles Bailey | 2/9/1886 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC34 West Gloucestershire, Clifford's Mesne | T R Norman | | 31/8/1951 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC34 West Gloucestershire, Durdham Down | Charles Cardale Babington | John Ewbank Leefe | 26/8/1836 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC35 Monmouthshire, Trelleck | Augustin Ley | Augustin Ley | 31/7/1877 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC36 Herefordshire, Aconbury | Augustin Ley | Charles Bailey | 25/8/1875 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC36 Herefordshire, Eaton Bishop | Augustin Ley | Charles Bailey | 4/9/1874 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC36 Herefordshire, Eaton Bishop | Augustin Ley | Augustin Ley | 4/9/1874 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC36 Herefordshire, Kimbolton | Augustin Ley | Augustin Ley | 15/8/1855 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC36 Herefordshire, Saint Weonards | Augustin Ley | Augustin Ley | 13/8/1881 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC37 Worcestershire, Eardiston | Clifford Charles Townsend | Clifford Charles Townsend | 1/10/1953 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC38 Warwickshire, Beausale Common | Henry Bromwich | Botanical Exchange Club Charles Bailey | 8/1868 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC38 Warwickshire, Beausale Common | Henry Bromwich | Charles Bailey | 8/1848 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC38 Warwickshire, Beausale Common | Henry Bromwich | Charles Bailey | 8/1866 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC38 Warwickshire, Beausale Common | Henry Bromwich | Henry Bromwich | 9/1871 | SLBI |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC38 Warwickshire, Beausale Common | Henry Bromwich | Augustin Ley | 9/1871 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC38 Warwickshire, Honiley | | Robert Large Baker | 11/1873 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC39 Staffordshire, Whitmore | Eric Smoothy Edees | Botanical Society of The British Isles Eric Smoothy Edees | 12/7/1949 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC41 Glamorganshire, Glyn-neath | Augustin Ley | Augustin Ley | 29/7/1890 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC42 Breconshire, Glyntawe | Augustin Ley | Augustin Ley | 22/7/1889 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC42 Breconshire, Talyllyn | Augustin Ley | Augustin Ley | 8/8/1876 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC43 Radnorshire, Llanyre | William Hunt Painter | | 7/1899 | ABS |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC44 Carmarthenshire, Rhandirmwyn | Augustin Ley | Augustin Ley | 8/8/1897 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC44 Carmarthenshire, Rhandirmwyn | | Augustin Ley | 13/8/1897 | BIRM |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC48 Merionethshire, Merioneth | Peter Michael Benoit | | 23/7/1959 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC53 South Lincolnshire, Stamford | | William Jackson Hooker | 8/1834 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC55 Leicestershire, Newtown Limford | F A Preston | William Bell William Booth Waterfall | 10/8/1899 | K |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC57 Derbyshire | William Henry Purchas | | 7/1880 | SHYB |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC57 Derbyshire, Baslow | Charles Bailey | Botanical Exchange Club Charles Bailey | 27/7/1878 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC57 Derbyshire, Baslow | Charles Bailey | Charles Bailey | 24/7/1878 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC57 Derbyshire, Baslow | Charles Bailey | Charles Bailey | 24/7/1878 | MANCH |
| Stachys sylvatica x palustris = S. x ambigua | GB, VC57 Derbyshire, Baslow | Charles Bailey | Charles Bailey | 27/7/1878 | K |