| + | Vaccinium oxycoccos | GB, VC70 Cumberland, Mosedale | Augustin Ley | Augustin Ley | 25/7/1876 | BIRM | 10/7/2010 |
| + | Vaccinium oxycoccos | GB, VC69 Westmorland, Ulpha | Augustin Ley | Augustin Ley | 31/8/1880 | BIRM | 10/7/2010 |
| + | Urtica urens | GB, VC40 Shropshire, Stapleton | Richard de Gylpyn Benson | | 5/1894 | SHYB | 18/10/2007 |
| + | Urtica dioica | GB, VC40 Shropshire, Kingsland | | | 4/6/1883 | SHYB | 6/10/2007 |
| + | Urtica dioica | GB, VC17 Surrey, Chertsey | William Hadden Beeby | William Hadden Beeby | 3/7/1886 | SLBI | 13/1/2014 |
| + | Umbilicus rupestris | GB, VC40 Shropshire, Pulverbach | Richard de Gylpyn Benson | | 7/1892 | SHYB | 26/8/2007 |
| + | Umbilicus rupestris | GB, VC1 West Cornwall, Lizard | | Robert Large Baker | 6/1883 | BIRM | 29/3/2010 |
| + | Ulmus glabra subsp. montana | GB, VC38 Warwickshire, Warwick | | Robert Large Baker | 25/4/1875 | BIRM | 18/11/2009 |
| + | Ulex gallii | GB, VC11 South Hampshire, Bournemouth | Edward Francis Linton | William Whitwell | 24/3/1902 | SHYB | 15/3/2007 |
| + | Ulex gallii | GB, VC40 Shropshire, Pulverbach | Richard de Gylpyn Benson | | 1895 | SHYB | 30/8/2007 |
| + | Ulex gallii | GB, VC1 West Cornwall, Ventongimps | Francis Rilstone | Botanical Exchange Club of The British Isles
Job Edward Lousley | 4/1929
8/1929 | SLBI | 28/11/2012 |
| + | Tussilago farfara | GB, VC6 North Somerset, Leigh Woods | William Hunt Painter | William Hunt Painter | 4/1880 | ABS | 5/7/2007 |
| + | Tussilago farfara | GB, VC55 Leicestershire, Twycross | Frederick Townsend | Frederick Townsend | 1843 | SLBI | 30/11/2012 |
| + | Tussilago farfara | GB, VC14 East Sussex, Barcombe | Joseph Woods | Frederick Townsend | 18/4/1840 | SLBI | 30/11/2012 |
| + | Tuberaria guttata subsp. breweri | FR, Pyr, Biarritz | Joseph Woods | Allan Octavian Hume
Frederick Townsend | 9/9/1851 | SLBI | 26/1/2011 |
| + | Trollius europaeus | GB | Henry Elliott Fox | Charles Bailey | 6/1887 | MANCH | 26/10/2006 |
| + | Trollius europaeus | GB, VC57 Derbyshire, Taddington | | Schill | 20/5/1923 | MANCH | 28/11/2006 |
| + | Trollius europaeus | GB, VC69 Westmorland, Lake District | | Charles Bailey
Frederick Thompson Mott
Thomas Thorp | 1842 | MANCH | 13/10/2007 |
| + | Trollius europaeus | GB, VC40 Shropshire, Whittington | | Richard de Gylpyn Benson | 30/5/1895 | SHYB | 25/10/2007 |
| + | Trollius europaeus | GB, VC57 Derbyshire, Lover's Leap | Charles Bailey | | 15/7/1864 | MANCH | 9/12/2009 |
| + | Trollius europaeus | GB, VC48 Merionethshire, Dolgellau | John Ralfs | | | SLBI | 7/2/2011 |
| + | Tripleurospermum maritimum | GB, VC10 Isle of Wight, Ventnor | | | 10/8/1867 | ABS | 10/2/2009 |
| + | Tripleurospermum inodorum | GB, VC40 Shropshire, Pulverbach | Richard de Gylpyn Benson | | 7/1891 | SHYB | 24/6/2007 |
| + | Tripleurospermum inodorum | GB, VC40 Shropshire, Sharpstones | Richard de Gylpyn Benson | | 12/7/1888 | SHYB | 24/6/2007 |
| + | Tripleurospermum inodorum | GB, VC6 North Somerset, Clapton in Gordano | Harold Stuart Thompson | Harold Stuart Thompson | 7/8/1917 | BIRM | 12/9/2010 |
| + | Trifolium squamosum | GB, VC46 Cardiganshire, Borth | | | | SHYB | 30/8/2007 |
| + | Trifolium squamosum | GB, VC113 Channel Islands, Castel | T C Royle | | 21/5/1895 | SHYB | 7/9/2007 |
| + | Trifolium squamosum | GB, VC34 West Gloucestershire, Lancaut | Walter Butt | | 16/6/1912 | GLR | 13/12/2010 |
| + | Trifolium scabrum | GB, VC18 South Essex, Shoeburyness | William Richardson Linton | William Hunt Painter
William Richardson Linton | 7/1886 | SHYB | 9/9/2007 |
| + | Trifolium procumbens | GB, VC33 East Gloucestershire, Cockleford | William Robert Price | William Robert Price | 24/6/1931 | GLR | 16/1/2011 |
| + | Trifolium pratense | GB, VC1 West Cornwall, Eastern Green | D A J Little | | 5/9/1946 | ABS | 26/2/2009 |
| + | Trifolium ornithopodioides | GB, VC50 Denbighshire, Colwyn | Spencer Henry Bickham | Botanical Exchange Club of The British Isles
Charles Bailey
William Hunt Painter | 27/5/1893 | ABS | 2/1/2008 |
| + | Trifolium hybridum | GB, VC40 Shropshire, Pulverbach | Richard de Gylpyn Benson | | 7/7/1894 | SHYB | 10/8/2007 |
| + | Trifolium hybridum | GB, VC38 Warwickshire, Langley | John Fraser | | 9/1890 | ABS | 24/3/2008 |
| + | Trifolium glomeratum | GB, VC1 West Cornwall, Isles of Scilly,Tresco | John Ralfs | Arthur Waters Preston
William Hunt Painter | 1877 | ABS | 18/2/2008 |
| + | Trifolium glomeratum | GB, VC1 West Cornwall, Scilly Isles,Saint Marys | Henry (Harry) Searle
William Curnow | William Hunt Painter | 29/5/1876 | ABS | 18/2/2008 |
| + | Trifolium fragiferum | GB, VC6 North Somerset, Weston-super-Mare | | William Hunt Painter | 7/1874 | ABS | 9/8/2007 |
| + | Trifolium dubium | | Richard de Gylpyn Benson | | 5/8/1902 | SHYB | 28/9/2007 |
| + | Trifolium dubium | GB, VC33 East Gloucestershire, Cheltenham | Dorothy Ellis de Vesian | | 7/1948 | GLR | 23/12/2010 |
| + | Trifolium dubium | GB, VC34 West Gloucestershire, Penmoel | William Robert Price | William Robert Price | 14/6/1907 | GLR | 1/1/2011 |
| + | Trientalis europaea | GB, VC62 North-east Yorkshire, Hole of Horcum | Richard Charles L'Estrange Burges | | 24/6/1938 | BIRM | 14/5/2012 |
| + | Tragopogon pratensis | GB, VC39 Staffordshire | Edwin Bernard Benson | | | SHYB | 17/6/2007 |
| + | Tragopogon pratensis subsp. pratensis | GB, VC44 Carmarthenshire, Llanelly | R Anthony Jenkins | | 31/7/1961 | ABS | 18/2/2008 |
| + | Tragopogon pratensis subsp. minor | GB, VC17 Surrey, Croydon | Henry Tuke Mennell | Croydon Natural History and Scientific Society | 6/1889 | SLBI | 6/1/2013 |
| + | Tragopogon pratensis | GB, VC55 Leicestershire, Scraptoft | Arthur Reginald Horwood | Watson Botanical Exchange Club
Arthur Reginald Horwood | 22/6/1905 | SLBI | 6/1/2013 |
| + | Tragopogon pratensis | GB, VC20 Hertfordshire, Hitchin | Joseph Edward Little | | 25/6/1927 | SLBI | 6/1/2013 |
| + | Tragopogon porrifolius | GB, VC1 West Cornwall, Devoran | Frederick Hamilton Davey | Allan Octavian Hume | 16/6/1902 | SLBI | 5/1/2013 |
| + | Torilis nodosa | GB, VC40 Shropshire, Churton | Richard de Gylpyn Benson | | 1897 to 1898 | SHYB | 17/10/2007 |
| + | Torilis arvensis | | | William Jackson Hooker | | K | 16/4/2015 |
| + | Tordylium maximum | GB, VC18 South Essex, Tilbury Fort | Richard Charles L'Estrange Burges | | 24/7/1946 | BIRM | 10/11/2011 |
| + | Tilia x vulgaris | GB, VC36 Herefordshire, Foxley
GB, VC36 Herefordshire, Ladylift | Augustin Ley | Augustin Ley | 2/10/1879 | BIRM | 14/12/2009 |
| + | Tilia x vulgaris | GB, VC36 Herefordshire, Wellington | Augustin Ley | Augustin Ley | 22/8/1882 | BIRM | 14/12/2009 |
| + | Tilia x vulgaris | GB, VC40 Shropshire, Ludford | Augustin Ley | Augustin Ley | 7/10/1881 | BIRM | 14/12/2009 |
| + | Tilia platyphyllos x cordata = T. x europaea | GB, VC17 Surrey, Wandsworth | William Frederick Saunders | Muriel Saunders | | ABS | 9/9/2007 |
| + | Tilia platyphyllos | GB, VC57 Derbyshire, Repton | William Hunt Painter | William Hunt Painter | 7/1874 | MANCH | 3/2/2007 |
| + | Tilia platyphyllos | GB, VC57 Derbyshire, Buxton | William Hunt Painter | William Hunt Painter | 7/1878 | MANCH | 3/2/2007 |
| + | Tilia platyphyllos | GB, VC57 Derbyshire, Cressbrook Dale | William Hunt Painter | William Hunt Painter | 6/1879 | MANCH | 3/2/2007 |
| + | Tilia platyphyllos | GB, VC34 West Gloucestershire, Symonds Yat | Eleonora Armitage | Eleonora Armitage | 2/7/1905 | ABS | 18/2/2008 |
| + | Tiedemannia filiformis subsp. greenmannii | USFL, Bay County | Edwin L Bridges
Steve L Orzell | University of Texas Herbarium | 15/9/1989 | FSU | 27/3/2015 |
| + | Thymus serpyllum | GB, VC40 Shropshire, Sharpstones | Richard de Gylpyn Benson | | 12/7/1888 | SHYB | 16/8/2007 |
| + | Thymus polytrichus | GB, VC49 Caernarvonshire, Great Ormes Head | R O Morris | | 7/1959 | ABS | 9/8/2007 |
| + | Thymus chamaedrys | GB, VC34 West Gloucestershire, Hotwells | Harold Stuart Thompson | Harold Stuart Thompson | 31/7/1916 | BIRM | 23/7/2008 |
| + | Thlaspi caerulescens | GB, VC57 Derbyshire, Youlgreave | A B Purchas | Augustin Ley | 25/5/1900 | BIRM | 21/1/2010 |
| + | Thlaspi arvense | GB, VC16 West Kent, Swanley
GB, VC16 West Kent, Wilmington | Allan Octavian Hume | | 21/6/1904 | SLBI | 17/12/2010 |
| + | Thlaspi arvense | GB, VC17 Surrey, Croydon | Henry Tuke Mennell | Croydon Natural History and Scientific Society
Henry Tuke Mennell | 6/1886 | SLBI | 22/12/2010 |
| + | Thlaspi alpestre var. occitanum | GB, VC6 North Somerset, Winterhead | James Walter White | William Hunt Painter | 30/4/1889 | SHYB | 11/10/2007 |
| + | Thalictrum minus var. collinum | GB, VC57 Derbyshire, Castleton | | William Hunt Painter | | ABS | 24/1/2008 |
| + | Thalictrum minus subsp. majus | | Nicholas Edward Brown | William Hunt Painter | | ABS | 7/2/2008 |
| + | Thalictrum minus subsp. arenarium | GB, VC60 West Lancashire, Botton | John William Daltry | | 1840 | ABS | 13/5/2008 |
| + | Thalictrum minus subsp. arenarium | GB, VC49 Caernarvonshire, Twll Du | John William Daltry | | 1840 | ABS | 26/7/2008 |
| + | Thalictrum minus subsp. majus | GB, VC28 West Norfolk, West Acre | | Douglas Montague Heath | 17/9/1917 | BIRM | 6/9/2008 |
| + | Thalictrum minus | GB, VC44 Carmarthenshire, Carmarthenshire Fan | Augustin Ley | Augustin Ley | 12/7/1906 | BIRM | 10/8/2009 |
| + | Thalictrum minus | GB, VC1 West Cornwall, Kennack Cove | Richard Barker Ullman | Richard Barker Ullman | 1/7/1930 | SLBI | 19/1/2011 |
| + | Thalictrum minus | GB, VC69 Westmorland, Langdale Cultivated | Augustin Ley | William Robert Sherrin | 4/8/1908 | SLBI | 16/2/2011 |
| + | Thalictrum minus | GB, VC6 North Somerset, Cheddar Cliffs | Richard Barker Ullman | Richard Barker Ullman | 4/6/1927 | SLBI | 20/2/2011 |
| + | Thalictrum minus | IE, VCH28 Co. Sligo, Benbulben | William Richardson Linton | Botanical Exchange Club of The British Isles
William Richardson Linton | 17/8/1885 | SLBI | 21/2/2011 |
| + | Thalictrum minus | GB, VC6 North Somerset, Cheddar Gorge | | Robert Eaton George Cole | 24/8/1855 | LLN | 21/5/2012 |
| + | Thalictrum minus | GB, VC54 North Lincolnshire, Cleethorpes | Frederick Arnold Lees | | 1892 | LLN | 25/5/2012 |
| + | Thalictrum flavum | GB, VC17 Surrey, Shalford | William Hadden Beeby | William Hadden Beeby | 7/7/1881 | SLBI | 21/2/2011 |
| + | Thalictrum dunense | GB, VC49 Caernarvonshire, Great Ormes Head | Edwin Bernard Benson | | 7/1891 | SHYB | 21/9/2007 |
| + | Teucrium botrys | GB, VC17 Surrey, Headly Lane, Surrey | William West
William West | George Stephen West
William West | 1/8/1900 | BIRM | 11/1/2010 |
| + | Tephroseris integrifolia subsp. maritima | GB, VC52 Anglesey, Holyhead | John Edwards Griffith | William Hunt Painter | 6/1889 | SHYB | 12/4/2007 |
| + | Tephroseris integrifolia | GB, VC29 Cambridgeshire, Odsey | A Carpenter | David Davis | | GOD | 17/12/2009 |
| + | Teesdalia nudicaulis | GB, VC40 Shropshire, Pulverbach | Richard de Gylpyn Benson | | 5/5/1894 | SHYB | 10/3/2007 |
| + | Teesdalia nudicaulis | GB, VC40 Shropshire, Pulverbach | Alan Benson | | 25/4/1894 | SHYB | 10/3/2007 |
| + | Teesdalia nudicaulis | GB, VC15 East Kent, Dungeness | William Henry Griffin | Allan Octavian Hume | 11/6/1908 | SLBI | 27/12/2010 |
| + | Tamus communis | GB, VC63 South-west Yorkshire, Doncaster | | | 6/1875 | ABS | 4/2/2009 |
| + | Tamus communis | GB, VC63 South-west Yorkshire, Baildon | William West | George Stephen West
William West | 6/1904 | BIRM | 10/8/2009 |
| + | Tamarix gallica | GB, VC1 West Cornwall, Newquay | Richard Charles L'Estrange Burges | | 30/8/1940 | BIRM | 13/2/2011 |
| + | Symphytum tuberosum | GB, VC83 Midlothian, Inveresk | | Harold Stuart Thompson
John Thomas Irvine Boswell-Syme
Thomas Clark | 6/1850 | BIRM | 28/5/2008 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Oglet | Arthur John Farmer | Arthur John Farmer | 9/5/1945 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Didsbury | John Norton Mills | John Norton Mills | 21/6/1969 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Birkdale | Charles Bailey
Henry Ball | Charles Bailey | 24/8/1907 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Birkdale | Charles Bailey | Charles Bailey | 24/8/1907 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Southport | Effie Moira Rosser | | 6/6/1954 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Sefton Park | Henry Smith Fisher | Manchester Museum
Charles Bailey
John Harbord Lewis | 8/1874 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Sefton Park | Henry Smith Fisher | Charles Bailey
John Harbord Lewis | 7/1874 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Sefton Park | John Harbord Lewis | Charles Bailey | | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Sefton Park | John Harbord Lewis | Charles Bailey | | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Sefton Park | Henry Smith Fisher | Charles Bailey | 7/1874 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Birkdale | Charles Bailey
Henry Ball | Charles Bailey | 24/8/1907 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC59 South Lancashire, Southport | Charles Bailey | Charles Bailey | 24/8/1907 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC58 Cheshire, Knutsford Cultivated | Charles Bailey | Charles Bailey | 21/5/1881 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC58 Cheshire, Lindow Common | Effie Moira Rosser | | 6/7/1954 | MANCH | 2/6/2006 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC1 West Cornwall, Isles of Scilly,Tresco | D A J Little | | 6/1963 | ABS | 16/8/2007 |
| + | Symphytum officinale x asperum = S. x uplandicum | GB, VC10 Isle of Wight, Niton | Job Edward Lousley | Job Edward Lousley | 21/6/1930 | SLBI | 9/2/2013 |
| + | Symphytum officinale | GB, VC40 Shropshire, Kingsland | Richard de Gylpyn Benson | | 8/8/1887 | SHYB | 4/9/2007 |
| + | Symphytum officinale | GB, VC19 North Essex, Bush Wood, Easton | | | 7/1859 | ABS | 10/4/2008 |
| + | Symphytum officinale | GB, VC13 West Sussex, Worthing | | Henry Haselfoot Haines | 21/6/1887 | ABS | 17/8/2008 |
| + | Symphytum officinale | GB, VC30 Bedfordshire, Blunham | William Hillhouse | William Hillhouse | 7/6/1876 | BIRM | 6/9/2008 |
| + | Symphytum officinale | GB, VC113 Channel Islands, Jersey | | | 7/1864 | ABS | 2/8/2009 |
| + | Symphytum officinale var. patens | GB, VC16 West Kent, Catford | William Henry Griffin | Allan Octavian Hume | 12/5/1901 | SLBI | 7/2/2013 |
| + | Symphytum | GB, VC5 South Somerset, Timberscombe | Harold Stuart Thompson | Harold Stuart Thompson | 8/7/1922 | BIRM | 25/5/2008 |
| + | Succisa pratensis | GB, VC40 Shropshire, Pulverbach | Richard de Gylpyn Benson | | 7/1893 | SHYB | 24/10/2007 |
| + | Succisa pratensis | GB, VC52 Anglesey, South Stack | Douglas Montague Heath | Douglas Montague Heath | 18/7/1921 | BIRM | 5/11/2009 |
| + | Succisa pratensis | GB, VC88 Mid Perthshire, Birnam Hill | | | 13/8/1875 | DBC | 14/3/2011 |
| + | Succisa pratensis | IE, VCH21 Co. Dublin, Terenure | Robert Lloyd Praeger | Robert Lloyd Praeger | 9/1903 | DBC | 14/3/2011 |
| + | Subularia aquatica | GB, VC44 Carmarthenshire, Llyn y Fan Fach | Harry Joseph Riddelsdell | Augustin Ley | 7/1902 | BIRM | 22/12/2010 |
| + | Subularia aquatica | GB, VC49 Caernarvonshire, Llanberis Lakes | Harold Goodman Dixon
Hugh Neville Dixon | Hugh Neville Dixon
Leslie Beeching Hall | 4/8/1879 | SLBI | 24/12/2010 |
| + | Suaeda vera | GB, VC6 North Somerset, Clevedon | | | 8/1889 | ABS | 28/5/2008 |
| + | Suaeda vera | GB, VC28 West Norfolk, Heacham | Walter Stiles | Walter Stiles | 8/8/1907 | BIRM | 10/7/2010 |
| + | Suaeda maritima | GB, VC4 North Devon, River Taw, Ashford | William Hunt Painter | William Hunt Painter | | SHYB | 26/8/2007 |
| + | Suaeda maritima | GB, VC60 West Lancashire, Morecambe | William Hunt Painter | William Hunt Painter | 8/1864 | ABS | 21/3/2008 |
| + | Suaeda maritima | GB, VC69 Westmorland, Grange | | Augustin Ley | 30/9/1880 | BIRM | 10/7/2010 |
| + | Stratiotes aloides | GB, VC83 Midlothian, Blackhall | | James A Terras | 1884 | E | 28/4/2015 |
| + | Stellaria uliginosa | GB, VC17 Surrey, Wisley Common | D A J Little | | 17/5/1942 | ABS | 12/2/2008 |
| + | Stellaria palustris | GB, VC6 North Somerset, Shapwick Moor | James Walter White | | 7/1886 | BSBI | 18/1/2008 |
| + | Stellaria palustris | GB, VC29 Cambridgeshire, Coe Fen | Albert John Hosking | | 13/5/1897 | K | 9/5/2012 |
| + | Stellaria nemorum | GB, VC59 South Lancashire, Whalley | | | 1839 | ABS | 28/7/2008 |
| + | Stellaria neglecta | GB, VC85 Fifeshire, Balmuto,Pirniss Wood | John Thomas Irvine Boswell-Syme | London Botanical Exchange Club
Robert Large Baker | 5/1874 | BIRM | 10/7/2010 |
| + | Stellaria neglecta | GB, VC85 Fifeshire, Balmuto | John Thomas Irvine Boswell-Syme | Robert Large Baker | 11/1876 | BIRM | 10/7/2010 |
| + | Stellaria neglecta | GB, VC2 East Cornwall, Sandplace | Henry Boyden | Watson Botanical Exchange Club
Augustin Ley
Henry Boyden | 19/5/1910 | BIRM | 10/7/2010 |
| + | Stellaria media | GB, VC34 West Gloucestershire, Tortworth | James Walter White | | 1887 | BSBI | 18/1/2008 |
| + | Stellaria media | GB, VC53 South Lincolnshire, Baston | | | 28/5/1938 | BIRM | 10/7/2010 |
| + | Stellaria media | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 9/1864 | GLR | 29/11/2010 |
| + | Stellaria holostea | GB, VC37 Worcestershire, Clent Hills | Roger Knowles | | 3/6/1951 | BIRM | 10/7/2010 |
| + | Stellaria holostea | GB, VC33 East Gloucestershire, Sapperton | William J H Greenwood | | 15/5/1913 | GLR | 9/12/2010 |
| + | Stellaria graminea | GB, VC40 Shropshire, Bomere Wood | | | 31/5/1888 | SHYB | 17/10/2007 |
| + | Statice auriculifolia | GB, VC45 Pembrokeshire, Tenby | Edwin Bernard Benson | | 7/1892 | SHYB | 15/3/2007 |
| + | Stachys sylvatica x palustris = S. x ambigua | GB, VC59 South Lancashire, Hale | Arthur John Farmer | | 19/8/1947 | MANCH | 27/6/2006 |
| + | Stachys sylvatica x palustris = S. x ambigua | GB, VC36 Herefordshire, Eaton Bishop | Augustin Ley | Charles Bailey | 4/9/1874 | MANCH | 4/8/2006 |
| + | Stachys sylvatica | GB, VC53 South Lincolnshire, Stamford | John William Daltry | | 1840 | ABS | 12/2/2008 |
| + | Stachys palustris | GB, VC3 South Devon, Dawlish | R | | 8/1896 | ABS | 12/2/2008 |
| + | Stachys palustris | GB, VC13 West Sussex, Goring | | Henry Haselfoot Haines | 7/1886 | ABS | 18/2/2008 |
| + | Spiranthes spiralis | GB, VC52 Anglesey, Holyhead Island | A Wright | | 12/9/1894 | SHYB | 11/4/2007 |
| + | Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC60 West Lancashire, Claughton | Eric Fairgrieve Greenwood | | 12/7/1991 | LIV | 17/8/2007 |
| + | Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Trawden | Vera Gordon | | 20/8/1987 | LIV | 20/8/2007 |
| + | Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Rainford | Vera Gordon | | 18/7/1985 | LIV | 22/8/2007 |
| + | Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Little Crosby | Vera Gordon | | 2/9/1995 | LIV | 22/8/2007 |
| + | Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Walton | Vera Gordon | | 16/7/1993 | LIV | 22/8/2007 |
| + | Spiraea salicifolia x douglasii = S. x pseudosalicifolia | GB, VC59 South Lancashire, Hightown | Vera Gordon | | 27/7/1994 | LIV | 23/8/2007 |
| + | Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Lostock | Vera Gordon | | 29/8/1987 | LIV | 20/8/2007 |
| + | Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Bolton le Sands | Leonard Albert Livermore | | 2/8/1986 | LIV | 22/8/2007 |
| + | Spiraea alba x douglasii = S. x billardii | GB, VC59 South Lancashire, Formby,Freshfield | Vera Gordon | | 2/8/1995 | LIV | 23/8/2007 |
| + | Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Silverdale | Leonard Albert Livermore | | 1986 | LIV | 23/8/2007 |
| + | Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Littledale | Leonard Albert Livermore | | 1989 | LIV | 10/9/2007 |
| + | Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Halton | Leonard Albert Livermore | | 18/6/1989 | LIV | 10/9/2007 |
| + | Spiraea alba x douglasii = S. x billardii | GB, VC60 West Lancashire, Morecambe | Leonard Albert Livermore | | 1989 | LIV | 10/9/2007 |
| + | Spergularia rupicola | GB, VC100 Clyde Islands, Great Cumbrae Island | M K Benson | | 8/1895 | SHYB | 26/8/2007 |
| + | Spergularia rupicola | GB, VC49 Caernarvonshire, Morfa Bychan | R E Leighton | | 12/9/1960 | ABS | 12/2/2008 |
| + | Spergularia rupicola | GB, VC49 Caernarvonshire, Great Ormes Head | R O Morris | | 7/1959 | ABS | 18/2/2008 |
| + | Spergularia rupicola | GB, VC52 Anglesey, South Stack | Allan Octavian Hume | Allan Octavian Hume | 14/6/1905 | SLBI | 13/9/2011 |
| + | Spergularia rubra | GB, VC40 Shropshire, Castle Pulverbatch | Richard de Gylpyn Benson | | 5/7/1892 | SHYB | 10/3/2007 |
| + | Spergularia media | GB, VC48 Merionethshire, Barmouth | Charles Bailey | Charles Bailey
William Hunt Painter | 21/7/1879 | ABS | 12/2/2008 |
| + | Spergularia marina | FR, Gironde, Aquitaine, Bordeaux | T C Royle | | 1896 | SHYB | 16/8/2007 |
| + | Spergula arvensis | GB, VC49 Caernarvonshire, Llanberis, Llanberis lake | Richard de Gylpyn Benson | | 1893 | SHYB | 21/9/2007 |
| + | Spartina maritima | GB, VC9 Dorset, Poole Harbour | | Leslie John Audus | 26/6/1938 | ABS | 18/2/2008 |
| + | Sparganium erectum subsp. erectum | GB, VC45 Pembrokeshire, Tenby | Edwin Bernard Benson | | 7/1892 | SHYB | 10/3/2007 |
| + | Sparganium erectum subsp. neglectum | GB, VC14 East Sussex, Catsfield | Ernest Stanley Salmon | William Hunt Painter | 23/9/1895 | SHYB | 11/10/2007 |
| + | Sorbus thuringiaca | GB, VC13 West Sussex, Oving | | Chenevix-Trench | 1896 to 1897 | MANCH | 18/7/2006 |
| + | Sorbus rupicola | GB, VC49 Caernarvonshire, Gloddaeth | Augustin Ley | Augustin Ley | 19/6/1901 | BIRM | 24/7/2010 |
| + | Sorbus minima | GB, VC42 Breconshire, Craig Cille | Augustin Ley | National Museum of Wales
Watson Botanical Exchange Club
Harold Stuart Thompson | 19/8/1896 | BIRM | 25/7/2010 |
| + | Sorbus bristoliensis | GB, VC6 North Somerset, Leigh Woods | Cecil Ivry Sandwith
Harold Stuart Thompson | Harold Stuart Thompson | 6/8/1933 | BIRM | 25/7/2010 |
| + | Sorbus aucuparia x aria = S. x thuringiaca | GB, VC66 County Durham, Bishop Auckland | J P Soutter | Charles Bailey
J P Soutter | 2/6/1881 | MANCH | 18/7/2006 |
| + | Sorbus aria x torminalis = S. x vagensis | GB, VC34,VC36, Bicknor Woods | Augustin Ley | Botanical Exchange Club
William Hunt Painter | 23/6/1877 | ABS | 6/9/2007 |
| + | Sonchus oleraceus | GB, VC40 Shropshire, Pulverbach | Richard de Gylpyn Benson | | 8/1893 | SHYB | 12/10/2007 |
| + | Sonchus oleraceus | GB, VC40 Shropshire, Kingsland | | Richard de Gylpyn Benson | 28/5/1888 | SHYB | 17/10/2007 |
| + | Sonchus arvensis | GB, VC21 Middlesex, Twickenham | Elizabeth Charlotte Moxon | | 1839 | GOD | 17/12/2009 |
| + | Sonchus arvensis | GB, VC33 East Gloucestershire, Pittville, Cheltenham | James Buckman | | 1840 | GOD | 17/12/2009 |
| + | Solanum nigrum | GB, VC113 Channel Islands, Guernsey | T C Royle | | 30/7/1895 | SHYB | 26/10/2007 |
| + | Solanum nigrum | GB, VC4 North Devon, Barnstaple | Edwin Bernard Benson | | 7/1895 | SHYB | 26/10/2007 |
| + | Solanum nigrum | GB, VC36 Herefordshire, Ross | Augustin Ley | Augustin Ley | 2/9/1910 | BIRM | 14/12/2009 |
| + | Solanum nigrum | GB, VC36 Herefordshire, Ludford | Augustin Ley | Augustin Ley | 9/1894 | BIRM | 14/12/2009 |
| + | Solanum dulcamara | GB, VC40 Shropshire, Kingsland | | Richard de Gylpyn Benson | 20/6/1888 | SHYB | 18/10/2007 |
| + | Solanum dulcamara | GB, VC62 North-east Yorkshire, Stokesley | William A Mudd | George Stephen West | 7/1853 | BIRM | 8/6/2008 |
| + | Smyrnium olusatrum | GB, VC3 South Devon, Daddy Hole Down | Richard Charles L'Estrange Burges | | 3/4/1932 | BIRM | 13/5/2012 |
| + | Sium latifolium | GB, VC27 East Norfolk, Sutton | Richard Charles L'Estrange Burges | | 26/8/1939 | BIRM | 13/2/2011 |
| + | Sium latifolium | IE, VCH24 Co. Longford, River Tang, mouth of | Robert Lloyd Praeger | Robert Lloyd Praeger | 19/8/1900 | GALW | 3/4/2015 |
| + | Sisyrinchium montanum | GB, VC6 North Somerset, University College Garden, Bristol Cultivated | William Hunt Painter | William Hunt Painter | 7/1891 | SHYB | 18/10/2007 |
| + | Sisymbrium pannonicum | GB, VC17 Surrey, Sutton | Edward Charles Wallace | Watson Botanical Exchange Club | 3/7/1925 | SLBI | 17/12/2010 |
| + | Sisymbrium orientale | GB, VC8 South Wiltshire, Salisbury | Joseph Donald Grose | Joseph Donald Grose | 21/8/1938 | SLBI | 15/12/2010 |
| + | Sisymbrium orientale | GB, VC18 South Essex, Dagenham | Arthur H Carter | | 22/8/1936 | SLBI | 18/12/2010 |
| + | Sisymbrium orientale | GB, VC39 Staffordshire, Burton on Trent | Richard Charles L'Estrange Burges | | 19/5/1933 | BIRM | 16/1/2011 |
| + | Sisymbrium orientale | GB, VC39 Staffordshire, Handsworth | Richard Charles L'Estrange Burges | | 6/1946 | BIRM | 10/11/2011 |
| + | Sisymbrium orientale | GB, VC11 South Hampshire, Fareham | Richard Charles L'Estrange Burges | | 30/9/1939 | BIRM | 30/5/2012 |
| + | Sisymbrium irio | GB, VC17 Surrey, Norwood Cultivated | William Henry Griffin | Allan Octavian Hume | 15/4/1910 | SLBI | 21/12/2010 |
| + | Sison amomum | GB, VC58 Cheshire | Edwin Bernard Benson | | 8/1895 | SHYB | 14/3/2007 |
| + | Sinapis arvensis | GB, VC21 Middlesex, Acton | William Robert Sherrin | William Robert Sherrin | 6/1899 | SLBI | 20/12/2010 |
| + | Sinapis arvensis | GB, VC20 Hertfordshire, Hitchin | Joseph Edward Little | | 21/8/1926 | SLBI | 20/12/2010 |
| + | Sinapis alba | GB, VC17 Surrey, Lower Morden | Charles Edward Britton | Charles Edward Britton | 11/7/1911 | SLBI | 15/12/2010 |
