| + | Agrostis tenuis | GB, VC17 Surrey, Squire's Great Wood | | | 22/9/1909 | BIRM | 17/5/2010 |
| + | Agrostis vinealis | GB, VC46 Cardiganshire, Allt Crug Garn | Andrew David Quentin Agnew | | 9/7/1998 | ABS | 23/3/2008 |
| + | Aira caryophyllea | GB, VC75 Ayrshire, Ailsa Craig | Brian William Fox | | 16/8/1960 | BON | 12/1/2010 |
| + | Aira caryophyllea | GB, VC10 Isle of Wight, Bowcombe Down | Herbert Mann Livens | | 7/6/1906 | BON | 8/2/2010 |
| + | Aira caryophyllea | GB, VC6 North Somerset, Weston-super-Mare | Charles Ottley Groom | Mantua And Montferrat | | BON | 28/2/2010 |
| + | Aira praecox | GB, VC46 Cardiganshire, Tre'r-ddôl | Gareth M Evans | Gareth M Evans | 15/6/1961 | ABS | 6/3/2008 |
| + | Aira praecox | GB, VC48 Merionethshire, Bala | Gwenda M Jones | | 1962 | ABS | 23/3/2008 |
| + | Aira praecox | GB, VC75 Ayrshire, Ailsa Craig | Brian William Fox | | 16/8/1960 | BON | 28/2/2010 |
| + | Ajuga chamaepitys | GB, VC17 Surrey, Box Hill | Charles Smith Nicholson | London Natural History Society
Charles Smith Nicholson | 8/9/1900 | ABS | 5/5/2008 |
| + | Ajuga chamaepitys | GB, VC16 West Kent, Cuxton | Charles Smith Nicholson | London Natural History Society | 12/6/1905 | ABS | 24/3/2009 |
| + | Ajuga chamaepitys | GB, VC113 Channel Islands, Jersey | C J Tempere | George Stephen West | 8/1876 | BIRM | 24/3/2009 |
| + | Ajuga chamaepitys | GB, VC17 Surrey, Epsom | | Robert Large Baker | 9/1878 | BIRM | 24/3/2009 |
| + | Ajuga chamaepitys | GB, VC16 West Kent, Cobham Park | Arthur Reginald Horwood | | 30/9/1923 | K | 22/6/2014 |
| + | Ajuga chamaepitys | GB, VC17 Surrey, Box Hill | Arthur William Hill | | 9/8/1892 | K | 26/6/2014 |
| + | Ajuga reptans | GB, VC14 East Sussex, Saint Leonards | | | 4/1862 | ABS | 1/3/2009 |
| + | Ajuga reptans | GB, VC17 Surrey, Ashtead | Charles Edward Britton | Charles Edward Britton | 15/5/1927 | K | 1/6/2014 |
| + | Ajuga reptans | GB, VC58 Cheshire, Styal | | George Cheetham Churchill | 8/6/1861 | K | 15/6/2014 |
| + | Ajuga reptans | GB, VC13 West Sussex, Heyshott | Edward Charles Wallace | Edward Charles Wallace | 2/6/1935 | K | 22/6/2014 |
| + | Alchemilla alpina | GB, VC64 Mid-west Yorkshire, Settle | John Tatham | | | ABS | 19/3/2008 |
| + | Alchemilla connivens | GB, VC17 Surrey, Croydon Cultivated | Arthur Bennett
R Wood | William Hadden Beeby | 1885 | SLBI | 22/5/2012 |
| + | Alchemilla filicaulis | GB, VC40 Shropshire, Church Stretton | | | 22/5/1904 | ABS | 18/4/2008 |
| + | Alchemilla filicaulis subsp. filicaulis | GB, VC55 Leicestershire, Scraptoft | Arthur Reginald Horwood | Botanical Exchange Club of The British Isles
William Hunt Painter | 11/6/1905 | ABS | 29/3/2008 |
| + | Alchemilla glabra | GB, VC69 Westmorland, Hayeswater | Richard Barker Ullman | Richard Barker Ullman | 2/9/1913 | SLBI | 11/5/2012 |
| + | Alchemilla monticola | GB, VC66 County Durham, Teesdale Cultivated | Alfred James Wilmott | Watson Botanical Exchange Club
Charles Edgar Salmon | 20/5/1926 | SLBI | 22/5/2012 |
| + | Alchemilla monticola | GB, VC66 County Durham, Middleton in Teesdale | George Claridge Druce | Job Edward Lousley | 8/1930 | SLBI | 20/6/2012 |
| + | Alchemilla pratensis | GB, VC64 Mid-west Yorkshire, Austwick | Job Edward Lousley | Job Edward Lousley | 22/5/1935 | SLBI | 22/6/2012 |
| + | Alchemilla pratensis | GB, VC98 Argyllshire, Dalmally | Harold Goodman Dixon
Hugh Neville Dixon | Hugh Neville Dixon
Leslie Beeching Hall | 28/8/1878 | SLBI | 1/7/2012 |
| + | Alchemilla vestita | GB, VC66 County Durham, Middleton in Teesdale | George Claridge Druce | | 8/1930 | SLBI | 20/6/2012 |
| + | Alchemilla vulgaris | GB, VC69 Westmorland, Ambleside | I M Gaster | | 31/7/1945 | SLBI | 11/5/2012 |
| + | Alchemilla vulgaris agg | GB, VC34 West Gloucestershire, Waterley Bottom | C C Foss | | 22/5/1938 | GLR | 5/2/2011 |
| + | Alisma plantago-aquatica | GB, VC59 South Lancashire, Droylesden Canal | Gertrude Mackie | | 28/7/1956 | MANCH | 6/10/2007 |
| + | Alisma plantago-aquatica | GB, VC2 East Cornwall, Town Mills, Launceston | William Wise | | 7/8/1888 | LAUS | 25/12/2007 |
| + | Alisma plantago-aquatica | GB, VC69 Westmorland, Coniston | | Philip Scarborough King | 6/8/1884 | ABS | 24/5/2008 |
| + | Alisma plantago-aquatica | GB, VC46 Cardiganshire, Clarach Valley | William Hunt Painter | | 7/1908 | ABS | 2/12/2008 |
| + | Alisma plantago-aquatica | GB, VC3 South Devon, Stover Lake | R Steel | | 9/1966 | ABS | 29/12/2008 |
| + | Alisma plantago-aquatica | GB, VC16 West Kent, Dartford | M E Davies | | 30/8/1959 | ABS | 6/3/2009 |
| + | Alisma plantago-aquatica | GB, VC61,VC62, York | Denis John Carr | University of Manchester | 7/1947 | ABS | 18/3/2009 |
| + | Alliaria petiolata | GB, VC55 Leicestershire | A Beckett | | 28/7/1961 | ABS | 19/11/2008 |
| + | Alliaria petiolata | GB, VC14 East Sussex, Tarring Neville | | Henry Haselfoot Haines | 4/1887 | ABS | 28/1/2009 |
| + | Alliaria petiolata | GB, VC69 Westmorland, Barbon | | William Hunt Painter | 5/1863 | ABS | 7/2/2009 |
| + | Allium | GB, VC3 South Devon, Dawlish | | | 6/1896 | SHYB | 14/11/2007 |
| + | Allium acutiflorum | FR, Var, Porguerolles | Robert Charles Readett | | 30/5/1961 | BIRM | 15/11/2008 |
| + | Allium ampeloprasum | GB, VC1 West Cornwall, Eastern Green | D A J Little | | 28/7/1949 | ABS | 16/11/2007 |
| + | Allium ampeloprasum | GB, VC2 East Cornwall, Crackington Haven | William Wise | | | LAUS | 29/1/2008 |
| + | Allium ampeloprasum | GB, VC113 Channel Islands, Jersey, Saint Aubins Bay | | | 26/6/1883 | BIRM | 6/10/2009 |
| + | Allium ampeloprasum | GB, VC113 Channel Islands, Jersey, Saint Aubins Bay | | Augustin Ley | 21/7/1885 | BIRM | 6/10/2009 |
| + | Allium ampeloprasum | GB, VC5 South Somerset, Minehead Warren Cultivated | Edward Shearburn Marshall | Botanical Exchange Club of The British Isles
Augustin Ley
Edward Shearburn Marshall | 10/8/1908 | BIRM | 6/10/2009 |
| + | Allium carinatum | GB, VC49 Caernarvonshire, Bangor Cultivated | John Edwards Griffith | | 8/1886 | ABS | 29/1/2008 |
| + | Allium carinatum | GB, VC88,VC89, Perth | Frederic Stratton | | 26/8/1870 | BON | 11/11/2009 |
| + | Allium carinatum | GB, VC87,VC88,VC89, Tayside | George Claridge Druce | Watson Botanical Exchange Club
Patrick Martin Hall
Richard Barker Ullman | 8/1918 | SLBI | 9/1/2013 |
| + | Allium oleraceum | GB, VC69 Westmorland, Windermere | Sophia Armitt | | 7/1905 | ABS | 16/11/2007 |
| + | Allium oleraceum | GB, VC69 Westmorland, Windermere | Sophia Armitt | | 7/1905 | ABS | 16/11/2007 |
| + | Allium oleraceum | GB, VC29 Cambridgeshire, Hildersham | Anthony Wallis
Richard Henry Yapp | | 7/8/1901 | ABS | 16/11/2007 |
| + | Allium oleraceum | GB, VC64 Mid-west Yorkshire, Settle | | | 3/9/1853 | ABS | 16/11/2007 |
| + | Allium oleraceum | GB, VC34 West Gloucestershire, Clifton Down | | Henry Haselfoot Haines | 8/8/1930 | ABS | 30/11/2008 |
| + | Allium oleraceum | GB, VC62 North-east Yorkshire, Kilvington | | Mantua And Montferrat
William Foggitt | 8/1850 | BON | 29/8/2009 |
| + | Allium oleraceum | GB, VC61,VC62,VC63,VC64,VC65 | | | 1835 | BON | 27/9/2009 |
| + | Allium oleraceum | GB, VC34 West Gloucestershire, Bristol | | Botanical Society of Edinburgh | 21/8/1836 | BON | 17/10/2009 |
| + | Allium oleraceum | GB, VC90 Angus | | Mantua And Montferrat | | BON | 1/11/2009 |
| + | Allium oleraceum | GB, VC6 North Somerset, Long Ashton | Thomas Bruges Flower | | 7/1849 | BON | 15/11/2009 |
| + | Allium oleraceum | | J T Harris | Philip Brookes Mason | | BON | 17/11/2009 |
| + | Allium oleraceum | GB, VC56 Nottinghamshire, Bulwell | R Bulley | Botanical Exchange Club of The British Isles
Job Edward Lousley | 11/8/1927 | SLBI | 9/1/2013 |
| + | Allium oleraceum | GB, VC67 South Northumberland, Chollerford | Hugh Neville Dixon | Hugh Neville Dixon
Leslie Beeching Hall | 9/7/1905 | SLBI | 9/1/2013 |
| + | Allium paradoxum | GB, VC75 Ayrshire, Baing Loch | | Alexander Craig Christie | 25/5/1870 | BON | 23/8/2009 |
| + | Allium roseum | GB, VC25 East Suffolk, Sproughton | | Botanical Exchange Club of The British Isles
Edward Francis Linton | 7/3/1884 | ABS | 29/1/2008 |
| + | Allium roseum | FR, Var, Corniche des Maures | Robert Charles Readett | | 15/5/1960 | BIRM | 15/11/2008 |
| + | Allium schoenoprasum | GB, VC42,VC43, Boughrood | M Hildred Bigwood | | 5/7/1975 | ABS | 16/11/2007 |
| + | Allium schoenoprasum | GB, VC42 Breconshire, Erwood | Spencer Henry Bickham | Botanical Exchange Club of The British Isles
Chambre Corker Vigurs
Spencer Henry Bickham | 6/1904 | ABS | 16/11/2007 |
| + | Allium schoenoprasum | GB, VC42 Breconshire, Erwood | William Hunt Painter | | 12/7/1899 | ABS | 16/11/2007 |
| + | Allium schoenoprasum | GB, VC42 Breconshire, Erwood | William Hunt Painter | | 12/7/1899 | ABS | 16/11/2007 |
| + | Allium schoenoprasum | GB, VC1 West Cornwall, Lizard Head | James Walter White | | 23/6/1891 | ABS | 16/11/2007 |
| + | Allium schoenoprasum | GB, VC1 West Cornwall, Lizard | William Booth Waterfall | | 6/1874 | ABS | 16/11/2007 |
| + | Allium schoenoprasum | GB, VC42 Breconshire, Erwood | Augustin Ley | | 15/6/1887 | BSBI | 25/2/2008 |
| + | Allium schoenoprasum | GB, VC1,VC2 | Charles Bailey | | 7/1866 | BON | 31/8/2009 |
| + | Allium schoenoprasum | GB, VC1 West Cornwall, Kynance Cove | | | 1834 | BON | 24/9/2009 |
| + | Allium schoenoprasum | GB, VC1 West Cornwall, Mullion | James Cunnack | | 6/1875 | BON | 4/10/2009 |
| + | Allium schoenoprasum | GB, VC1 West Cornwall, Kynance Cove | | Nicholas Tyacke | | BON | 17/10/2009 |
| + | Allium schoenoprasum | GB, VC1 West Cornwall, Rill Point | | Mantua And Montferrat | 7/1847 | BON | 17/10/2009 |
| + | Allium schoenoprasum | GB, VC1 West Cornwall, Lizard | William Robert Crotch | Mantua And Montferrat | 1861 | BON | 3/11/2009 |
| + | Allium schoenoprasum | GB, VC1 West Cornwall, Lizard | William Robert Crotch | Mantua And Montferrat | 1861 | BON | 8/11/2009 |
| + | Allium schoenoprasum | DE, Brandenburg, Lenzen | Schütz | Ernest Charles Horrell
F S Bennett | 6/1880 | BON | 11/11/2009 |
| + | Allium schoenoprasum | GB, VC42 Breconshire, Erwood | Spencer Henry Bickham | Alfred Loydell
William Robert Sherrin | 9/6/1904 | SLBI | 1/1/2013 |
| + | Allium schoenoprasum | GB, VC1 West Cornwall, Kynance | John Frederick Rayner | Job Edward Lousley | 6/1925 | SLBI | 1/1/2013 |
| + | Allium schoenoprasum | GB, VC1 West Cornwall, Lizard Cultivated
GB, VC1 West Cornwall, Rill Head | William Booth Waterfall | London Botanical Exchange Club
William Hadden Beeby | 6/1877 | SLBI | 1/1/2013 |
| + | Allium schoenoprasum | | | Allan Octavian Hume
Frederick Townsend | | SLBI | 1/1/2013 |
| + | Allium scorodoprasum | GB, VC65 North-west Yorkshire, Thoralby | James Ward | John Tatham | 7/1840 | ABS | 30/11/2008 |
| + | Allium scorodoprasum | GB, VC63 South-west Yorkshire, Halifax | Riley | | | BON | 5/9/2009 |
| + | Allium scorodoprasum | GB, VC62 North-east Yorkshire, Sowerby, Thirsk | Frederick Addison | | 12/7/1969 | BON | 20/9/2009 |
| + | Allium scorodoprasum | GB, VC68 North Northumberland, Cornhill on Tweed | J W Madagon | Botanical Society of London
Mantua And Montferrat | 1854 | BON | 6/10/2009 |
| + | Allium scorodoprasum | GB, VC59 South Lancashire, Speke | John William Burton | John William Burton | 26/6/1875
17/7/1875 | BON | 17/11/2009 |
| + | Allium triquetrum | GB, VC1 West Cornwall, Tresco | D A J Little | | 6/1963 | ABS | 24/12/2007 |
| + | Allium triquetrum | GB, VC113 Channel Islands, Guernsey | | | 2/6/1877 | ABS | 30/11/2008 |
| + | Allium triquetrum | GB, VC113 Channel Islands, Vazon Bay, Guernsey | John Thomas Irvine Boswell-Syme | Botanical Society of London
Mantua And Montferrat | 6/1853 | BON | 25/8/2009 |
| + | Allium triquetrum | FR, Var, Les Maures | Hippolyte Hanry | Ernest Charles Horrell | 4/1873 | BON | 29/8/2009 |
| + | Allium triquetrum | FR, Var, Les Maures | Hippolyte Hanry | Ernest Charles Horrell
F S Bennett | 4/1873 | BON | 29/8/2009 |
| + | Allium triquetrum | GB, VC59 South Lancashire, Roby Mill | David Paul Earl | | 2000 | BON | 4/10/2009 |
| + | Allium triquetrum | GB, VC113 Channel Islands, Guernsey | | Philip Brookes Mason | 5/1873 | BON | 11/10/2009 |
| + | Allium ursinum | GB, VC63 South-west Yorkshire, Sprotboro | | | 5/1875 | ABS | 21/12/2007 |
| + | Allium ursinum | GB, VC91 Kincardineshire, Den Finella | | Andrew Kerr | 1841 | BON | 20/9/2009 |
| + | Allium ursinum | GB, VC67 South Northumberland, Wylam | Brian William Fox | | 28/4/1948 | BON | 4/10/2009 |
| + | Allium ursinum | VC18, thrift wood | | | | BON | 11/11/2009 |
| + | Allium ursinum | GB, VC59 South Lancashire, Chorley | J Ashton | Borough of Bolton Botanical Society | 3/5/1896 | BON | 22/11/2009 |
| + | Allium vineale | GB, VC27 East Norfolk, Sprowston | | Botanical Exchange Club of The British Isles
Edward Francis Linton | 21/7/1885 | ABS | 25/12/2007 |
| + | Allium vineale | GB, VC64 Mid-west Yorkshire, Lawkland | Rachel Ford Thompson | | 8/8/1888 | ABS | 15/11/2008 |
| + | Allium vineale | GB, VC29 Cambridgeshire, Cambridge | Richard Henry Yapp | | 21/7/1901 | ABS | 30/11/2008 |
| + | Allium vineale | GB, VC9 Dorset, Portland Isle | James Walter White | Botanical Exchange Club of The British Isles | 23/7/1884 | ABS | 30/11/2008 |
| + | Allium vineale | GB, VC62 North-east Yorkshire, Thirsk | | Mantua And Montferrat
William Foggitt | 6/1848 | BON | 20/9/2009 |
| + | Allium vineale | GB, VC10 Isle of Wight, Fairlea | Frederic Stratton | | 3/7/1869 | BON | 11/10/2009 |
| + | Allium vineale | GB, VC48 Merionethshire, Barmouth | Philip Brookes Mason | Philip Brookes Mason | | BON | 20/10/2009 |
| + | Allium vineale | GB, VC15,VC16 | Andrew Bloxam | Mantua And Montferrat | 1848 | BON | 1/11/2009 |
| + | Allium vineale | GB, VC20 Hertfordshire, Hertford | William Higgins Coleman | Philip Brookes Mason | | BON | 1/11/2009 |
| + | Allium vineale | GB, VC9 Dorset, Isle of Portland | J T Harris | | | BON | 11/11/2009 |
| + | Allium vineale | GB, VC83 Midlothian, Arthur's Seat | Philip Brookes Mason | Philip Brookes Mason | 6/1875 | BON | 18/11/2009 |
| + | Allium vineale | GB, VC113 Channel Islands, Jersey | Philip Brookes Mason | Philip Brookes Mason | | BON | 22/11/2009 |
| + | Allium vineale | GB, VC15 East Kent, Dymchurch | Edward Charles Wallace | Edward Charles Wallace
Job Edward Lousley | 2/7/1930 | SLBI | 1/1/2013 |
| + | Alnus serrulata | USFL, Franklin County, Apalachicola Bay | Robert K Godfrey | | 1/7/1976 | FSU | 11/8/2015 |
| + | Alopecurus aequalis | GB, VC38 Warwickshire, Earlswood Reservoir | Harold Stuart Thompson | Harold Stuart Thompson | 8/1893 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC29 Cambridgeshire, Witchford | Charles Cardale Babington | George Stephen West
William West | 6/7/1855 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC36 Herefordshire, Moccas Park | Augustin Ley | Augustin Ley | 17/8/1880 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC36 Herefordshire, Clifford | Augustin Ley | Augustin Ley | 13/7/1887 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC17 Surrey, Battersea | | Andrew Kerr
John Ellerton Stocks | 9/1842 | BON | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC17 Surrey, Ham Common | | William Hillhouse | 27/6/1875 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC36 Herefordshire, Brampton Bryan | | Augustin Ley | 28/6/1882 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC36 Herefordshire, Ashe | Augustin Ley | Augustin Ley | 28/7/1886 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC55 Leicestershire, Gopsall Park, Twycross | | Philip Brookes Mason | | BON | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC40 Shropshire, Mere Pool | Langley Kitching | | 18/7/1898 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC36 Herefordshire, King's Caple | | Augustin Ley | 18/5/1896 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC40 Shropshire, Mere Pool | Augustin Ley | Augustin Ley | 24/7/1882 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC36 Herefordshire, Canon Bridge | | Augustin Ley | 6/6/1887 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC7 North Wiltshire, Coate Water | | Harold Stuart Thompson
Joseph Donald Grose | 21/8/1934 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC19 North Essex, Essex,Walton on the-Naze | Frederick Yorke Brocas | Mantua And Montferrat | 1882 | BON | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC13,VC14, Crawley | Ernest Ellman
Frederick Raine
Harold Stuart Thompson | Harold Stuart Thompson | 16/8/1906 | BIRM | 23/12/2009 |
| + | Alopecurus aequalis | GB, VC38 Warwickshire, Coleshill Pool | W Garneys | Philip Brookes Mason | | BON | 23/12/2009 |
| + | Alopecurus alpinus | GB, VC90 Angus, Glen Doll | | Augustin Ley | 1/7/1874 | BIRM | 15/7/2009 |
| + | Alopecurus bulbosus | GB, VC9 Dorset, Weymouth | | | 1878 | BON | 21/1/2010 |
| + | Alopecurus bulbosus | GB, VC13 West Sussex, Chichester Harbour | Frederick Henry Arnold | | 3/7/1875 | BON | 28/2/2010 |
| + | Alopecurus geniculatus | GB, VC59 South Lancashire, Pennington Flash | Brian William Fox | | 9/1956 | BON | 22/1/2010 |
| + | Alopecurus myosuroides | GB, VC17 Surrey, Wandsworth Common | B Or P Cox | Mantua And Montferrat | | BON | 7/2/2010 |
| + | Alopecurus myosuroides | GB, VC6 North Somerset, Bath | | Botanical Society of Edinburgh
R C Alexander | 1837 | BON | 16/2/2010 |
| + | Alopecurus myosuroides | GB, VC29 Cambridgeshire, Stretham | | Botanical Society of Edinburgh
Harry Baber | 9/1838 | BON | 3/3/2010 |
| + | Alopecurus pratensis | | | | | SHYB | 8/11/2007 |
| + | Alopecurus pratensis | GB, VC69 Westmorland, Barbon | William Hunt Painter | | 7/1902 | ABS | 18/1/2008 |
| + | Alopecurus pratensis x geniculatus = A. x brachystylus | GB, VC38 Warwickshire, Kenilworth | Henry Bromwich | Botanical Exchange Club of The British Isles
Charles Bailey | 7/1900 | MANCH | 29/9/2006 |
| + | Alopecurus pratensis x geniculatus = A. x brachystylus | GB, VC38 Warwickshire, Kenilworth | Albert Bruce Jackson
Henry Bromwich | | 7/1900 | MANCH | 29/9/2006 |
| + | Althaea officinalis | GB, VC41 Glamorganshire, Llanrhidian | M Hildred Bigwood | | 1/9/1967 | ABS | 25/4/2008 |
| + | Althaea officinalis | GB, VC44 Carmarthenshire, Burry Port | Barbara A G Williams | | 4/9/1959 | ABS | 1/5/2008 |
| + | Althaea officinalis | Cultivated | H Higginson | William Hunt Painter | 8/1880 | ABS | 1/1/2009 |
| + | Althaea officinalis | GB, VC16,VC17, West Wickham | William Henry Griffin | Allan Octavian Hume | 10/8/1910 | SLBI | 22/9/2011 |
| + | Alyssum alyssoides | GB, VC29 Cambridgeshire, Histon | R H Biffen | | 30/5/1902 | ABS | 9/5/2008 |
| + | Alyssum alyssoides | GB, VC18 South Essex, Epping | D A J Little | | 12/7/1947 | ABS | 8/3/2009 |
| + | Amaranthus australis | USFL, Nassau County, Saint Marys River | Loran C Anderson | Florida State University, Robert K. Godfrey Herbarium | 24/7/1999 | FSU | 12/8/2015 |
| + | Amaranthus blitum | GB, VC21 Middlesex, Mill Hill | F | | 10/1867 | ABS | 26/1/2008 |
| + | Amaranthus chlorostachys | GB, VC18 South Essex, Barking | Richard Charles L'Estrange Burges | | 3/10/1952 | BIRM | 25/1/2011 |
| + | Amaranthus hybridus | USFL, Leon County, Tallahassee | Loran C Anderson | Florida State University, Robert K. Godfrey Herbarium | 3/7/2000 | FSU | 7/7/2015 |
| + | Amaranthus retroflexus | GB, VC113 Channel Islands, La Porte l'Etacq, Jersey | Richard Charles L'Estrange Burges | | 2/9/1948 | BIRM | 3/7/2012 |
| + | Amaranthus thunbergii | GB, VC30 Bedfordshire, Biggleswade | Job Edward Lousley
John George Dony | | 22/9/1951 | BIRM | 13/10/2011 |
| + | Amaranthus thunbergii | GB, VC37 Worcestershire, Charlton | Richard Charles L'Estrange Burges | | 10/1953 | BIRM | 26/11/2011 |
| + | Amaranthus viridis | USFL, Bear Creek State Forest | Loran C Anderson | Florida State University, Robert K. Godfrey Herbarium | 31/5/2012 | FSU | 20/4/2015 |
| + | Ambrosia artemisiifolia | GB, VC60 West Lancashire, Saint Anne's on Sea | Charles Bailey | | 23/8/1902 | ABS | 14/12/2008 |
| + | Ammi majus | GB, VC36 Herefordshire, Ledbury | Spencer Henry Bickham | Watson Botanical Exchange Club
Harold Stuart Thompson
Spencer Henry Bickham | 12/9/1915 | BIRM | 20/6/2009 |
| + | Ammi majus | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | Augustin Ley | 1868 to 1869 | BIRM | 20/6/2009 |
| + | Ammi majus | GB, VC1 West Cornwall, Penzance Cultivated | | Augustin Ley | 4/7/1883 | BIRM | 20/6/2009 |
| + | Ammi majus | GB, VC14 East Sussex, Eastbourne | Elizabeth Anne Lomax | Augustin Ley | 10/1877 | BIRM | 20/6/2009 |
| + | Ammi majus var. glaucifolium | GB, VC39 Staffordshire, Burton on Trent | Richard Charles L'Estrange Burges | | 10/1938 | BIRM | 17/3/2012 |
| + | Ammi visnaga | GB, VC39 Staffordshire, Burton on Trent | Richard Charles L'Estrange Burges | | 29/8/1936 | BIRM | 20/1/2011 |
| + | Ammophila arenaria | GB, VC4 North Devon, Woolacombe | William Higgins Coleman | | 8/7/1859 | BON | 7/3/2010 |
| + | Ammophila arundinacea | GB, VC49 Caernarvonshire, Llandudno | Richard de Gylpyn Benson | | 7/1893 | SHYB | 10/11/2007 |
| + | Amsinckia | GB, VC6 North Somerset, Clevedon, Court Hill | | Harold Stuart Thompson | 5/1918 | BIRM | 20/8/2008 |
| + | Amsinckia micrantha | GB, VC57 Derbyshire, Miller's Dale | William Moyle Rogers | Botanical Exchange Club of The British Isles
Augustin Ley
William Moyle Rogers | 16/8/1884 | BIRM | 20/8/2008 |
| + | Anacamptis pyramidalis | GB, VC45 Pembrokeshire, Tenby | Edwin Bernard Benson | | 7/1892 | SHYB | 24/3/2007 |
| + | Anacamptis pyramidalis | GB, VC9 Dorset, Poole Harbour | | | | SHYB | 24/3/2007 |
| + | Anacamptis pyramidalis | GB, VC17 Surrey, Betchworth | D A J Little | | 27/6/1948 | ABS | 25/4/2008 |
| + | Anacamptis pyramidalis | GB, VC10 Isle of Wight, Freshwater | Charles Smith Nicholson | Charles Smith Nicholson | 8/6/1896 | ABS | 15/12/2008 |
| + | Anacamptis pyramidalis | GB, VC24 Buckinghamshire, Loudwater | | William Hunt Painter | 7/1865 | ABS | 3/1/2009 |
| + | Anacamptis pyramidalis | GB, VC59 South Lancashire, Ainsdale Dunes | Brian William Fox | | 8/1956 | BON | 26/8/2009 |
| + | Anacamptis pyramidalis | GB, VC64 Mid-west Yorkshire, Ingleton | | | | BON | 20/9/2009 |
| + | Anacamptis pyramidalis | GB, VC13 West Sussex, Compton | | | 6/1841 | BON | 4/10/2009 |
| + | Anacamptis pyramidalis | IE, VCH9 Co. Clare, Aranmore | Philip Brookes Mason | Philip Brookes Mason | | BON | 25/10/2009 |
| + | Anacamptis pyramidalis | GB, VC17 Surrey, Box Hill | | Philip Brookes Mason | | BON | 25/10/2009 |
| + | Anacamptis pyramidalis | GB, VC3 South Devon, Teignmouth | J T Harris | Philip Brookes Mason | 1872 | BON | 3/11/2009 |
| + | Anacamptis pyramidalis | GB, VC25 East Suffolk, Bedingfield | W Garneys | Philip Brookes Mason | 1874 | BON | 3/11/2009 |
| + | Anacamptis pyramidalis | GB, VC17 Surrey, Betchworth | | Croydon Natural History and Scientific Society
Henry Franklin Parsons | 1/8/1892 | SLBI | 2/1/2012 |
| + | Anacamptis pyramidalis | GB, VC15 East Kent, Walmer Castle | Alex Halley | | 1840 | BR | 9/7/2015 |
| + | Anacyclus radiatus | GB, VC17 Surrey, Kew | George Nicholson | William Hillhouse | 8/1878 | BIRM | 18/3/2009 |
| + | Anacyclus radiatus | GB, VC41 Glamorganshire, Cardiff, Cardiff Docks | Harry Joseph Riddelsdell | Botanical Exchange Club of The British Isles
Augustin Ley
Harry Joseph Riddelsdell | 9/1903 | BIRM | 18/3/2009 |
| + | Anacyclus radiatus | GB, VC17 Surrey, Kew | John Gilbert Baker | Augustin Ley | 8/1877 | BIRM | 18/3/2009 |
| + | Anacyclus radiatus | GB, VC41 Glamorganshire, Cardiff, Cardiff Docks | Harry Joseph Riddelsdell | Botanical Exchange Club of The British Isles
Augustin Ley
Harry Joseph Riddelsdell | 9/1903 | BIRM | 18/3/2009 |
| + | Anagallis arvensis | GB, VC69 Westmorland, Barbon | | William Hunt Painter | 7/1862 | ABS | 10/11/2007 |
| + | Anagallis arvensis | GB, VC16 West Kent, Haltye | P R Harwood | | 3/8/1965 | ABS | 27/4/2008 |
| + | Anagallis arvensis | GB, VC13 West Sussex, Littlehampton | | | 8/1890 | ABS | 15/11/2008 |
| + | Anagallis arvensis | GB, VC41 Glamorganshire, Oxwich | A P Roach | | 10/7/1959 | ABS | 9/12/2008 |
| + | Anagallis arvensis | GB, VC56 Nottinghamshire, Hoveringham | Margaret Boote | | 3/8/1968 | ABS | 14/12/2008 |
| + | Anagallis arvensis | GB, VC46 Cardiganshire, Aberystwyth | O J B | | 7/1961 | ABS | 14/12/2008 |
| + | Anagallis arvensis | GB, VC16 West Kent, Cobham | Robin H Aram | | 8/1964 | ABS | 14/12/2008 |
| + | Anagallis arvensis | GB, VC1 West Cornwall, Marazion | D A J Little | | 18/11/1942 | ABS | 14/12/2008 |
| + | Anagallis arvensis | GB, VC41 Glamorganshire, The Mumbles | Clive P Rees | | 26/7/1959 | ABS | 14/12/2008 |
| + | Anagallis arvensis | GB, VC46 Cardiganshire, Goginan Lead Mines | R | | 30/9/1931 | ABS | 14/12/2008 |
| + | Anagallis arvensis | GB, VC46 Cardiganshire, Ynyslas Dunes | M Hildred Bigwood | | 7/1972 | ABS | 14/12/2008 |
| + | Anagallis arvensis var. phoenicea | GB, VC39 Staffordshire, Handsworth | Richard Charles L'Estrange Burges | | 8/1947 | BIRM | 13/7/2011 |
| + | Anagallis arvensis var. carnea | GB, VC3 South Devon, Berry Head | Richard Charles L'Estrange Burges | | 17/6/1945 | BIRM | 26/5/2012 |
