| + | Geranium sanguineum | GB, VC38 Warwickshire, Little Compton Cultivated | Douglas Montague Heath | Douglas Montague Heath | 9/8/1948 | BIRM | 25/10/2009 |
| + | Geranium sanguineum | GB, VC30 Bedfordshire, Colworth | McKellar | William Hillhouse | 7/6/1876 | BIRM | 14/11/2009 |
| + | Geranium versicolor | GB, VC2 East Cornwall, Treninnow | Augustin Ley | Augustin Ley | 2/7/1880 | BIRM | 11/11/2009 |
| + | Geranium versicolor | GB, VC1 West Cornwall, Poltesco | James Cunnack | Augustin Ley | 7/1875 | BIRM | 11/11/2009 |
| + | Glaux maritima | GB, VC2 East Cornwall, Rame Head | Augustin Ley | Augustin Ley | 16/5/1876 | BIRM | 13/11/2009 |
| + | Glaux maritima | GB, VC59 South Lancashire, Crosby | Burton Mounsher Watkins | Augustin Ley | 26/8/1873 | BIRM | 13/11/2009 |
| + | Glaux maritima | GB, VC96 East Inverness-shire, Inverness | Augustin Ley | Augustin Ley | 17/7/1870 | BIRM | 13/11/2009 |
| + | Glyceria plicata | GB, VC36 Herefordshire, Craswall | Augustin Ley | Augustin Ley | 31/8/1886 | BIRM | 18/10/2009 |
| + | Glyceria plicata | GB, VC36 Herefordshire, Fawley | Augustin Ley | Augustin Ley | 28/7/1881 | BIRM | 30/10/2009 |
| + | Glyceria plicata | GB, VC38 Warwickshire, Myton | | Robert Large Baker | 6/1873 | BIRM | 1/2/2010 |
| + | Habenaria conopsea | GB, VC12 North Hampshire, Ashford | William West | George Stephen West
William West | 21/6/1896 | BIRM | 1/11/2009 |
| + | Habenaria conopsea | GB, VC47 Montgomeryshire, Cwm Rhaiadr | Augustin Ley | Augustin Ley | 7/1860 | BIRM | 18/12/2009 |
| + | Helictotrichon pratense | GB, VC57 Derbyshire, Monsal Dale | William West | George Stephen West | 7/1879 | BIRM | 23/10/2009 |
| + | Helictotrichon pratense | GB, VC38 Warwickshire, Tachbrook Grove | Henry Bromwich | Botanical Exchange Club of The British Isles
Augustin Ley | 7/1894 | BIRM | 9/11/2009 |
| + | Helleborus foetidus | GB, VC30 Bedfordshire, Flitwick | Mary Ann Brooks | Mary Ann Brooks | 1841 | BIRM | 29/10/2009 |
| + | Helleborus foetidus | GB, VC36 Herefordshire, Brockhampton | Augustin Ley | Augustin Ley | 20/4/1882 | BIRM | 8/11/2009 |
| + | Helleborus foetidus | GB, VC26 West Suffolk, Hitcham | Maria Gosling | Charles Cardale Babington
George Stephen West
William West | 6/4/1860 | BIRM | 24/11/2009 |
| + | Helleborus viridis subsp. occidentalis | GB, VC6 North Somerset, Winterhead Farm | Harold Stuart Thompson | Harold Stuart Thompson | 4/4/1915
12/6/1915 | BIRM | 16/10/2009 |
| + | Helleborus viridis subsp. occidentalis | GB, VC57 Derbyshire, Ashwood Dale | Augustin Ley | Augustin Ley | 14/5/1868 | BIRM | 1/11/2009 |
| + | Helleborus viridis subsp. occidentalis | GB, VC6 North Somerset, Leigh | Martha Maria Atwood | George Stephen West | 15/4/1852 | BIRM | 5/11/2009 |
| + | Heracleum sphondylium | GB, VC38 Warwickshire, Radford Semele | | Robert Large Baker | 5/1878 | BIRM | 6/11/2009 |
| + | Heracleum sphondylium | GB, VC36 Herefordshire, Sellack | Augustin Ley | Augustin Ley | 5/5/1905 | BIRM | 9/11/2009 |
| + | Heracleum sphondylium | GB, VC61,VC64, Selby | William Richardson Linton | George Stephen West | 6/1880 | BIRM | 9/11/2009 |
| + | Herminium monorchis | GB, VC16 West Kent, Chevening | Henry Lascelles Jenner | Harold Stuart Thompson
Henry Lascelles Jenner
Thomas Clark | 7/1845 | BIRM | 30/11/2009 |
| + | Herminium monorchis | GB, VC33 East Gloucestershire, Painswick | Cecil Ivry Sandwith | Harold Stuart Thompson | | BIRM | 30/11/2009 |
| + | Herminium monorchis | GB, VC33 East Gloucestershire, Painswick | Joshua Browne | Harold Stuart Thompson
Thomas Clark | 30/6/1863 | BIRM | 30/11/2009 |
| + | Herminium monorchis | GB, VC15 East Kent, Wye Downs | John Frederick Jeffrey | Harold Stuart Thompson | 1903 | BIRM | 30/11/2009 |
| + | Herminium monorchis | GB, VC15 East Kent, Wye Downs | William Rickman Jeffrey | Harold Stuart Thompson | 7/1903 | BIRM | 30/11/2009 |
| + | Hirschfeldia incana | GB, VC92 South Aberdeenshire, Bridge of Don | | Augustin Ley | | BIRM | 25/11/2009 |
| + | Holcus lanatus | GB, VC20 Hertfordshire, Royston Heath | Walter Stiles | Walter Stiles | 7/7/1909 | BIRM | 30/11/2009 |
| + | Holcus mollis | GB, VC62 North-east Yorkshire, Ayton | William A Mudd | George Stephen West | 7/1851 | BIRM | 20/10/2009 |
| + | Hordeum marinum | GB, VC6 North Somerset, Highbridge | Harold Stuart Thompson | Harold Stuart Thompson | 7/1888 | BIRM | 1/11/2009 |
| + | Hordeum murinum | GB, VC21 Middlesex, Shepherds Bush | Walter Stiles | Walter Stiles | 20/8/1906 | BIRM | 6/11/2009 |
| + | Hordeum secalinum | GB, VC62 North-east Yorkshire, Ayton | William A Mudd | George Stephen West | 7/1853 | BIRM | 19/10/2009 |
| + | Hordeum secalinum | GB, VC19 North Essex, Bush End | Harold Stuart Thompson | Douglas Montague Heath | 6/1920 | BIRM | 13/11/2009 |
| + | Hypericum androsaemum | GB, VC37 Worcestershire, Pink Green | Joseph William Oliver | Birmingham Natural History and Philosophical Society | | BIRM | 25/10/2009 |
| + | Hypericum androsaemum | GB, VC14 East Sussex, Hailsham | | | 8/1874 | BIRM | 25/10/2009 |
| + | Hypericum elodes | GB, VC35 Monmouthshire, Trelleck | Augustin Ley | Augustin Ley | 11/8/1903 | BIRM | 3/11/2009 |
| + | Hypericum hirsutum | GB, VC34 West Gloucestershire, Almondsbury | Harold Stuart Thompson | Harold Stuart Thompson | 2/8/1916 | BIRM | 3/11/2009 |
| + | Isatis tinctoria | GB, VC33,VC37, Tewkesbury, Mythe Cliffs | Edward Cleminshaw | Edward Cleminshaw | 26/5/1901
22/6/1901 | BIRM | 13/11/2009 |
| + | Isolepis setacea | GB, VC34 West Gloucestershire, Mitcheldean | Augustin Ley | Augustin Ley | 13/9/1877 | BIRM | 4/11/2009 |
| + | Jasione montana | GB, VC49 Caernarvonshire, Bangor | George Hartley Bryan | Harold Stuart Thompson | | BIRM | 26/11/2009 |
| + | Jasione montana | GB, VC5,VC6 | Thomas Clark | Harold Stuart Thompson
Thomas Clark | | BIRM | 26/11/2009 |
| + | Juncus articulatus | GB, VC30 Bedfordshire, Clifton | William Hillhouse | William Hillhouse | 27/8/1875 | BIRM | 18/10/2009 |
| + | Juncus articulatus | GB, VC100 Clyde Islands, Ettrick Bay | | William Henry Wilkinson | 27/9/1885 | BIRM | 20/10/2009 |
| + | Juncus articulatus | GB, VC37 Worcestershire, Lye | | Robert Large Baker | 8/1873 | BIRM | 24/10/2009 |
| + | Juncus bulbosus | GB, VC113 Channel Islands, Guernsey,Petit Bot Bay | William Hillhouse | William Hillhouse | 19/9/1879 | BIRM | 28/10/2009 |
| + | Juncus bulbosus | GB, VC38 Warwickshire, Meriden | James B Phipps | James B Phipps | 25/7/1955 | BIRM | 29/10/2009 |
| + | Juncus bulbosus | GB, VC57 Derbyshire, Buxton | Augustin Ley | Augustin Ley | 27/8/1867 | BIRM | 25/11/2009 |
| + | Juncus conglomeratus | GB, VC54 North Lincolnshire, Hogsthorpe | Langley Kitching | Langley Kitching | 8/1899 | BIRM | 24/10/2009 |
| + | Juncus conglomeratus | GB, VC38 Warwickshire, Kenilworth, Rouncil Lane | | Robert Large Baker | 9/1873 | BIRM | 6/11/2009 |
| + | Juncus effusus | GB, VC5 South Somerset, Porlock | Harold Stuart Thompson | Harold Stuart Thompson | 7/1923 | BIRM | 18/11/2009 |
| + | Juncus gerardii | GB, VC6 North Somerset, Uphill | John Firminger Duthie | Augustin Ley | 15/6/1869 | BIRM | 23/10/2009 |
| + | Juncus inflexus | GB, VC37 Worcestershire, Alvechurch | George Stephen West | | 1/6/1910 | BIRM | 20/11/2009 |
| + | Juncus kochii | GB, VC48 Merionethshire, Afon Artro | John Gregory Hawkes | | 23/6/1953 | BIRM | 9/11/2009 |
| + | Juncus maritimus | GB, VC100 Clyde Islands, Brodick | Augustin Ley | Augustin Ley | 8/9/1883 | BIRM | 13/11/2009 |
| + | Juncus maritimus | GB, VC62 North-east Yorkshire, Coatham | John Gilbert Baker | George Stephen West | 9/1851 | BIRM | 20/11/2009 |
| + | Juncus subnodulosus | GB, VC43 Radnorshire, Rhayader | Augustin Ley | Augustin Ley | 3/8/1886 | BIRM | 18/12/2009 |
| + | Juniperus communis subsp. communis | GB, VC36 Herefordshire, Westhope Hill | Augustin Ley | Augustin Ley | 2/7/1888 | BIRM | 11/11/2009 |
| + | Koeleria cristata | | | Chawles | | BIRM | 16/10/2009 |
| + | Koeleria cristata | GB, VC96 East Inverness-shire, Aviemore | Albert Wilson
James Alfred Wheldon | Botanical Exchange Club of The British Isles
Augustin Ley
James Alfred Wheldon | 7/1908 | BIRM | 31/10/2009 |
| + | Lagurus ovatus | GB, VC113 Channel Islands, L'Ancresse Common | Charles Bailey | Augustin Ley
Charles Bailey | 13/8/1867 | BIRM | 19/10/2009 |
| + | Lamium amplexicaule | GB, VC36 Herefordshire, Ross, Benhall | Augustin Ley | Augustin Ley | 13/6/1892 | BIRM | 4/11/2009 |
| + | Lathyrus nissolia | GB, VC15 East Kent, Warden Point | Job Edward Lousley | Job Edward Lousley | 19/6/1932 | SLBI | 21/12/2011 |
| + | Lathyrus nissolia | GB, VC31 Huntingdonshire, Pidley | Alfred Fryer | William Hadden Beeby | 4/7/1883 | SLBI | 21/12/2011 |
| + | Lavatera arborea | GB, VC82 East Lothian, Bass Rock | Alexander Carroll Maingay | George Stephen West | 7/1856 | BIRM | 18/11/2009 |
| + | Leersia oryzoides | GB, VC13 West Sussex, Amberley | George Claridge Druce | Harold Stuart Thompson | 9/1902 | BIRM | 30/10/2009 |
| + | Leersia oryzoides | GB, VC13 West Sussex, Amberley | Herbert William Pugsley | Harold Stuart Thompson | 12/9/1908 | BIRM | 30/10/2009 |
| + | Lemna trisulca | GB, VC64 Mid-west Yorkshire, Askham Bog | | Langley Kitching | 12/7/1876 | BIRM | 19/10/2009 |
| + | Lepidium draba subsp. draba | GB, VC28 West Norfolk, Castle Acre | Frederick Robinson | Douglas Montague Heath | 10/6/1912 | BIRM | 25/11/2009 |
| + | Lepidium draba subsp. draba | GB, VC28 West Norfolk, King's Lynn | Douglas Montague Heath | Douglas Montague Heath | 26/6/1916 | BIRM | 25/11/2009 |
| + | Lepidium ruderale | GB, VC36 Herefordshire, Ross | Augustin Ley | Augustin Ley | 11/6/1908 | BIRM | 5/11/2009 |
| + | Lepidium ruderale | GB, VC17 Surrey, Kew | Harold Stuart Thompson | Harold Stuart Thompson | 15/7/1904 | BIRM | 5/11/2009 |
| + | Lepidium ruderale | GB, VC61 South-east Yorkshire, Hull | Phineas Fox Lee | Harold Stuart Thompson | 1884 | BIRM | 5/11/2009 |
| + | Leymus arenarius | GB, VC27 East Norfolk, South Beach,Yarmouth | William West | George Stephen West
William West | 25/7/1895 | BIRM | 23/10/2009 |
| + | Limonium vulgare x humile = L. x neumanii | GB, VC11 South Hampshire, Portchester | Edward Charles Wallace | Edward Charles Wallace
Harold Stuart Thompson | 26/8/1934 | BIRM | 15/10/2009 |
| + | Linaria vulgaris | GB, VC11 South Hampshire, Lymington | Augustin Ley | Augustin Ley | 14/8/1882 | BIRM | 28/10/2009 |
| + | Linum bienne | GB, VC17 Surrey, Thames Ditton | Hewett Cottrell Watson | Harold Stuart Thompson
Thomas Clark | 1848 | BIRM | 5/11/2009 |
| + | Linum bienne | GB, VC17 Surrey, Chessington | Hewett Cottrell Watson | Botanical Society of London
Harold Stuart Thompson
Hewett Cottrell Watson
Thomas Clark | 1848 | BIRM | 5/11/2009 |
| + | Linum perenne subsp. anglicum | GB, VC36 Herefordshire, Cwm Madoc Farm, Broad Oak | Augustin Ley | Augustin Ley | 20/10/1884 | BIRM | 6/11/2009 |
| + | Linum perenne subsp. anglicum | GB, VC36 Herefordshire, Warm Hill | Augustin Ley | Augustin Ley | 4/8/1880 | BIRM | 6/11/2009 |
| + | Lolium multiflorum | GB, VC38 Warwickshire, Chesterton | | Robert Large Baker | 6/1872 | BIRM | 19/10/2009 |
| + | Lolium temulentum | GB, VC3 South Devon, Plympton | Thomas Richard Archer Briggs | Augustin Ley | 3/8/1878 | BIRM | 19/10/2009 |
| + | Lotus angustissimus | GB, VC113 Channel Islands, Sark | Frederic Henry Ward | Harold Stuart Thompson | 8/1888 | BIRM | 23/11/2009 |
| + | Lotus angustissimus | GB, VC2 East Cornwall, Polperro | Francis Rilstone | Watson Botanical Exchange Club
Harold Stuart Thompson | 14/7/1934 | BIRM | 23/11/2009 |
| + | Lotus corniculatus | GB, VC6 North Somerset, Worle Hill | Ida Mary Roper | Watson Botanical Exchange Club
Harold Stuart Thompson
Ida Mary Roper | 13/6/1916 | BIRM | 26/10/2009 |
| + | Lotus corniculatus | GB, VC6 North Somerset, Mendip Hills | Harold Stuart Thompson | Harold Stuart Thompson | 6/1915 | BIRM | 26/10/2009 |
| + | Lotus corniculatus | GB, VC6 North Somerset, Sandford | Harold Stuart Thompson | Harold Stuart Thompson | 6/1919 | BIRM | 26/10/2009 |
| + | Lotus corniculatus | GB, VC62 North-east Yorkshire, Scarborough | Charles Waterfall | Watson Botanical Exchange Club
Charles Waterfall
Harold Stuart Thompson | 12/8/1901 | BIRM | 1/2/2010 |
| + | Lotus pedunculatus | GB, VC58 Cheshire, Sale | H A Hurst | Charles Bailey | 8/1877 | BIRM | 15/11/2009 |
| + | Luzula arcuata | GB, VC92 South Aberdeenshire, Ben Avon | J Roy | Augustin Ley | 7/1869 | BIRM | 28/10/2009 |
| + | Luzula campestris | GB, VC29 Cambridgeshire, Kingston | William West | George Stephen West
William West | 26/4/1895 | BIRM | 4/11/2009 |
| + | Luzula forsteri x pilosa = L. x borreri | GB, VC36 Herefordshire, Great Doward | Augustin Ley | Augustin Ley | 21/5/1894 | BIRM | 1/2/2010 |
| + | Luzula multiflora subsp. congesta | GB, VC36 Herefordshire, Werndu | Augustin Ley | Augustin Ley | 28/5/1881 | BIRM | 18/11/2009 |
| + | Luzula multiflora subsp. congesta | GB, VC36 Herefordshire, Titley | Augustin Ley | Augustin Ley | 7/6/1881 | BIRM | 12/12/2009 |
| + | Luzula pilosa | GB, VC37 Worcestershire, Alvechurch | | | 1/6/1910 | BIRM | 31/10/2009 |
| + | Lycopus europaeus | GB, VC6 North Somerset, Shapwick | Augustin Ley | Augustin Ley | 16/9/1910 | BIRM | 30/10/2009 |
| + | Lysimachia nummularia | GB, VC32 Northamptonshire, Wadenhoe | Augustin Ley | Augustin Ley | 26/7/1910 | BIRM | 7/11/2009 |
| + | Lysimachia thyrsiflora | GB, VC62 North-east Yorkshire, Carlton Miniott | Thomas J Foggitt | Augustin Ley | 17/7/1876 | BIRM | 16/10/2009 |
| + | Meconopsis cambrica | GB, VC67,VC68 | | Birmingham Natural History and Philosophical Society | | BIRM | 15/10/2009 |
| + | Meconopsis cambrica | | | Birmingham Natural History and Philosophical Society | 7/1860 | BIRM | 22/11/2009 |
| + | Medicago lupulina | GB, VC62 North-east Yorkshire, Ayton | William A Mudd | George Stephen West | 7/1852 | BIRM | 17/10/2009 |
| + | Melampyrum pratense | GB, VC107 East Sutherland, Lairg | Augustin Ley | Augustin Ley | 5/7/1870 | BIRM | 30/10/2009 |
| + | Melampyrum pratense | GB, VC109 Caithness, Dunbeath | Edward Francis Linton | Augustin Ley
Edward Francis Linton | 25/7/1888 | BIRM | 21/11/2009 |
| + | Melica nutans | GB, VC43 Radnorshire, Aberedw Rocks | Augustin Ley | Augustin Ley | 17/7/1880 | BIRM | 5/11/2009 |
| + | Mentha aquatica | GB, VC59 South Lancashire, Ainsdale
GB, VC59 South Lancashire, Freshfield | James Cosmo Melvill | Botanical Exchange Club of The British Isles
Augustin Ley
James Cosmo Melvill | 24/9/1888 | BIRM | 19/10/2009 |
| + | Mentha gentilis var. wirtgeniana | GB, VC36 Herefordshire, Great Doward | Augustin Ley | Augustin Ley | 19/8/1871 | BIRM | 6/11/2009 |
| + | Mercurialis annua | GB, VC17 Surrey, Mitcham Common | Job Edward Lousley | Watson Botanical Exchange Club | 18/10/1931 | BIRM | 23/10/2009 |
| + | Minuartia verna | GB, VC64 Mid-west Yorkshire, Kettlewell | William West | | 6/1904 | BIRM | 17/10/2009 |
| + | Moehringia trinervia | GB, VC53 South Lincolnshire, Baston | | | 17/9/1941 | BIRM | 1/11/2009 |
| + | Moenchia erecta | GB, VC36 Herefordshire, Whitbourne | | University Of Birmingham
Augustin Ley | 20/5/1907 | BIRM | 15/10/2009 |
| + | Moenchia erecta | GB, VC36 Herefordshire, Backbury | Augustin Ley | Augustin Ley | 26/6/1900 | BIRM | 15/10/2009 |
| + | Moenchia erecta | GB, VC36 Herefordshire, Ewyas Harold | C Butler | Augustin Ley | 5/1891 | BIRM | 15/10/2009 |
| + | Moenchia erecta | GB, VC36 Herefordshire, Presteigne | Augustin Ley | Augustin Ley | 27/5/1898 | BIRM | 15/10/2009 |
| + | Moenchia erecta | GB, VC17 Surrey, Puttenham Common | John Drew Salmon | Harold Stuart Thompson | 5/1846 | BIRM | 24/11/2009 |
| + | Moenchia erecta | GB, VC34 West Gloucestershire, Yate | Cedric Bucknall | Harold Stuart Thompson | 16/5/1914 | BIRM | 24/11/2009 |
| + | Moenchia erecta | GB, VC6 North Somerset, Keynsham | Harold Stuart Thompson | Harold Stuart Thompson | 28/5/1922 | BIRM | 24/11/2009 |
| + | Moenchia erecta | GB, VC5 South Somerset, Alfoxton | Harold Stuart Thompson | Harold Stuart Thompson | 5/1898 | BIRM | 24/11/2009 |
| + | Moenchia erecta | GB, VC18 South Essex, Chigwell | Harriet Eleanor Hamilton King | Harold Stuart Thompson | 5/1867 | BIRM | 24/11/2009 |
| + | Molinia caerulea | GB, VC29 Cambridgeshire, Wicken Fen | | Walter Stiles | 7/7/1909 | BIRM | 18/12/2009 |
| + | Montia fontana | GB, VC55 Leicestershire, Charnwood Forest | Harold Stuart Thompson | Watson Botanical Exchange Club
Harold Stuart Thompson | 9/6/1900 | BIRM | 4/11/2009 |
| + | Muscari neglectum | GB, VC62 North-east Yorkshire, Ayton Cultivated | William A Mudd | George Stephen West | 6/1853 | BIRM | 18/11/2009 |
| + | Myosotis ramosissima | GB, VC60 West Lancashire, Saint Annes on the Sea | Charles Bailey | Charles Bailey | 8/5/1906 | BIRM | 3/11/2009 |
| + | Myrrhis odorata | GB, VC57 Derbyshire, Buxton | Augustin Ley | Augustin Ley | 15/7/1868 | BIRM | 15/10/2009 |
| + | Narthecium ossifragum | GB, VC5 South Somerset, Taunton | I E R
William Robert Crotch | Mantua And Montferrat | | BON | 19/10/2009 |
| + | Narthecium ossifragum | GB | | Mantua And Montferrat | | BON | 19/10/2009 |
| + | Narthecium ossifragum | GB, VC100 Clyde Islands, Ettrick Bay | | William Henry Wilkinson | 27/9/1885 | BIRM | 23/10/2009 |
| + | Nasturtium microphyllum | GB, VC38 Warwickshire, Castle Bromwich | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 6/1876 | BIRM | 23/10/2009 |
| + | Nasturtium sylvestre | GB, VC6 North Somerset, Blagdon | Harold Stuart Thompson | Harold Stuart Thompson | 17/7/1930 | BIRM | 16/10/2009 |
| + | Nasturtium sylvestre | GB, VC6 North Somerset, Blagdon | Harold Stuart Thompson | Harold Stuart Thompson | 20/8/1929 | BIRM | 16/10/2009 |
| + | Neckeria lutea | GB, VC30 Bedfordshire, Luton | William Hillhouse | | 5/6/1876 | BIRM | 25/10/2009 |
| + | Neckeria lutea | GB, VC36 Herefordshire, Whitbourne | Augustin Ley | Augustin Ley | 7/9/1882 | BIRM | 6/12/2009 |
| + | Nectaroscordum siculum | GB, VC34 West Gloucestershire, Clifton Down | Harold Stuart Thompson | Harold Stuart Thompson | 3/1938 | BIRM | 17/10/2009 |
| + | Neottia nidus-avis | IE, VCH1,VCH2, Fore Mt, nr Killarney | William West | George Stephen West
William West | 7/1890 | BIRM | 2/11/2009 |
| + | Neottia nidus-avis | GB, VC29 Cambridgeshire, Kingston Wood | William West | George Stephen West
William West | 7/8/1894 | BIRM | 2/11/2009 |
| + | Neottia nidus-avis | GB, VC62 North-east Yorkshire, Crathorne | William A Mudd | George Stephen West | 7/1853 | BIRM | 9/11/2009 |
| + | Nepeta cataria | GB, VC4 North Devon, Braunton | William Booth Waterfall | Harold Stuart Thompson | | BIRM | 17/10/2009 |
| + | Nepeta cataria | GB, VC6 North Somerset, Edington | Thomas Clark | Harold Stuart Thompson
Thomas Clark | 31/8/1852 | BIRM | 17/10/2009 |
| + | Nymphoides peltata | GB, VC18 South Essex, Epping | | Douglas Montague Heath | 10/1923 | BIRM | 18/10/2009 |
| + | Nymphoides peltata | GB, VC29 Cambridgeshire, Ely | | Douglas Montague Heath | 8/1903 | BIRM | 18/10/2009 |
| + | Oenanthe aquatica | GB, VC62 North-east Yorkshire, Scarborough | William West | George Stephen West
William West | 19/8/1890 | BIRM | 3/11/2009 |
| + | Oenanthe aquatica | GB, VC6 North Somerset, Glastonbury | Harold Stuart Thompson | Harold Stuart Thompson | 6/7/1935 | BIRM | 13/11/2009 |
| + | Oenanthe aquatica | GB, VC6 North Somerset, Turf Moor | Thomas Clark | Harold Stuart Thompson
Thomas Clark | 27/6/1858 | BIRM | 6/12/2009 |
| + | Oenanthe aquatica | GB, VC17 Surrey, Thames Ditton | Hewett Cottrell Watson | Harold Stuart Thompson
Thomas Clark | 1844 | BIRM | 6/12/2009 |
| + | Oenanthe fluviatilis | GB, VC19 North Essex, Chelmsford | Douglas Montague Heath | Douglas Montague Heath | 8/1928 | BIRM | 28/10/2009 |
| + | Oenanthe fluviatilis | GB, VC29 Cambridgeshire, Cambridge | Alfred James Wilmott | Watson Botanical Exchange Club
Alfred James Wilmott
Augustin Ley | 14/11/1910 | BIRM | 8/11/2009 |
| + | Oenanthe pimpinelloides | GB, VC5 South Somerset, Bridgwater | Harold Stuart Thompson | Harold Stuart Thompson | 7/1888 | BIRM | 26/10/2009 |
| + | Onobrychis viciifolia | GB, VC3 South Devon, Teignmouth,Shaldon | Charles Bailey | Charles Bailey | 22/5/1907 | BIRM | 6/12/2009 |
| + | Ononis spinosa | Milton Hill | | William Hillhouse | 10/7/1875 | BIRM | 19/10/2009 |
| + | Ononis spinosa | GB, VC29 Cambridgeshire, Wisbech | Walter Stiles | Walter Stiles | 6/8/1908 | BIRM | 9/11/2009 |
| + | Ophrys sphegodes | GB, VC15 East Kent, Abbots Cliff | A Bennett
J Bennett | Harold Stuart Thompson | 25/5/1901 | BIRM | 11/11/2009 |
| + | Ophrys sphegodes | GB, VC15 East Kent, Saint Margaret's at Cliffe | A Bennett
J Bennett | Harold Stuart Thompson | 27/6/1901 | BIRM | 11/11/2009 |
| + | Orchis mascula | GB, VC34 West Gloucestershire, Bicknor Woods | Augustin Ley | Augustin Ley | 30/5/1876 | BIRM | 6/11/2009 |
| + | Orchis morio | GB, VC37 Worcestershire, Lickey | Robert Coane Roberts Jordan | George Stephen West
Robert Coane Roberts Jordan | 8/6/1853 | BIRM | 31/10/2009 |
| + | Orchis morio | GB, VC21 Middlesex, Harefield | George Stephen West | George Stephen West | 13/5/1895 | BIRM | 31/10/2009 |
| + | Origanum vulgare | GB, VC64 Mid-west Yorkshire, Grassington | | George Stephen West | | BIRM | 16/10/2009 |
| + | Origanum vulgare | GB, VC64 Mid-west Yorkshire, Ripon | William West | George Stephen West
William West | 7/1906 | BIRM | 26/10/2009 |
| + | Ornithogalum pyrenaicum | GB, VC22 Berkshire, Ashridge Wood | George Claridge Druce | Augustin Ley
George Claridge Druce | 7/1891 | BIRM | 3/11/2009 |
| + | Ornithogalum pyrenaicum | GB, VC6 North Somerset, Queen Charlton | Douglas Montague Heath | Douglas Montague Heath | 2/7/1927 | BIRM | 14/11/2009 |
| + | Ornithogalum pyrenaicum | GB, VC7 North Wiltshire, Bradford-on-Avon | Jenner | Douglas Montague Heath | 10/6/1928 | BIRM | 14/11/2009 |
| + | Ornithogalum pyrenaicum | GB, VC6 North Somerset, Bath | Douglas Montague Heath | Douglas Montague Heath | 31/3/1927 | BIRM | 14/11/2009 |
| + | Ornithogalum umbellatum | GB, VC36 Herefordshire, Saint Weonards | Augustin Ley | Augustin Ley | 22/5/1884 | BIRM | 26/10/2009 |
| + | Orobanche minor | GB, VC36 Herefordshire, Sellack | Augustin Ley | Augustin Ley | 2/1869 | BIRM | 29/10/2009 |
| + | Papaver rhoeas | GB, VC34 West Gloucestershire, Minchinhampton | Charles Bailey | Charles Bailey | 23/9/1907 | BIRM | 14/10/2009 |
| + | Papaver rhoeas | GB, VC36 Herefordshire, Sellack | Augustin Ley | Augustin Ley | 3/8/1872 | BIRM | 1/11/2009 |
| + | Papaver somniferum subsp. setigerum | GB, VC9 Dorset, White Nothe | Elizabeth Anne Lomax | Watson Botanical Exchange Club
Augustin Ley | 30/6/1884 | BIRM | 26/10/2009 |
| + | Papaver somniferum subsp. setigerum | GB, VC17 Surrey, Mickleham | Eyre Champion de Crespigny | Botanical Exchange Club of The British Isles
Augustin Ley | 7/1879
1881 | BIRM | 7/11/2009 |
| + | Parapholis strigosa | GB, VC59 South Lancashire, Liverpool | John Harbord Lewis | Augustin Ley
John Harbord Lewis | 6/7/1873 | BIRM | 26/11/2009 |
| + | Parietaria judaica | GB, VC30 Bedfordshire, Bromham | Mary Ann Brooks | | | BIRM | 25/11/2009 |
| + | Persicaria bistorta | GB, VC64 Mid-west Yorkshire, Leeds, Weetwood | William West | George Stephen West
William West | 10/6/1889 | BIRM | 23/11/2009 |
| + | Persicaria hydropiper | GB, VC36 Herefordshire, Sellack | Augustin Ley | Augustin Ley | 22/9/1883 | BIRM | 1/2/2010 |
| + | Persicaria vivipara | GB, VC89 East Perthshire, Glen Tilt | Augustin Ley | Augustin Ley | 19/7/1870 | BIRM | 16/10/2009 |
| + | Petroselinum crispum | GB, VC28 West Norfolk, South Pickenham Cultivated | Douglas Montague Heath | Douglas Montague Heath | 22/6/1916 | BIRM | 26/10/2009 |
| + | Petroselinum segetum | GB, North Wales | | George Stephen West | 8/1879 | BIRM | 19/10/2009 |
| + | Peucedanum ostruthium | GB, VC59 South Lancashire, Bolton | Charles Bailey | Botanical Exchange Club of The British Isles
Charles Bailey | 6/5/1882 | BIRM | 6/11/2009 |
| + | Peucedanum ostruthium | GB, VC85 Fifeshire, North Balmule | John Thomas Irvine Boswell-Syme | George Stephen West | 7/1872 | BIRM | 6/11/2009 |
| + | Phalaris paradoxa | GB, VC34 West Gloucestershire, Shirehampton | Cecil Ivry Sandwith | Harold Stuart Thompson | 1/7/1918 | BIRM | 9/11/2009 |
| + | Pinguicula grandiflora | IE, VCH2 North Kerry, Killarney,Upper Lake | Augustin Ley | Augustin Ley | 25/8/1887 | BIRM | 5/11/2009 |
| + | Plantago coronopus | GB, VC28 West Norfolk, Swaffham | Douglas Montague Heath | Douglas Montague Heath | 16/6/1913 | BIRM | 11/11/2009 |
| + | Plantago coronopus | GB, VC113 Channel Islands, Jersey,Vingtaine de Noirmont | Augustin Ley | Augustin Ley | 26/6/1883 | BIRM | 18/11/2009 |
| + | Plantago major | GB, VC12 North Hampshire, Petersfield | William West | George Stephen West
William West | 21/6/1896 | BIRM | 30/10/2009 |
| + | Plantago maritima | GB, VC49 Caernarvonshire, Little Ormes Head | William Henry Wilkinson | William Henry Wilkinson | 1/9/1884 | BIRM | 20/11/2009 |
| + | Platanthera chlorantha | GB, VC28 West Norfolk, Stibbard | Douglas Montague Heath | Douglas Montague Heath | 4/6/1915 | BIRM | 26/10/2009 |
| + | Platanthera chlorantha | GB, VC36 Herefordshire, Great Doward | Augustin Ley | Augustin Ley | 1/6/1871 | BIRM | 2/11/2009 |
| + | Polycarpon tetraphyllum | GB, VC113 Channel Islands, L'Ancresse Common | Langley Kitching | | 4/7/1898 | BIRM | 20/10/2009 |
| + | Polygala serpyllifolia | GB, VC64 Mid-west Yorkshire, Allerton | William West | George Stephen West
William West | 1876 | BIRM | 7/11/2009 |
| + | Polygala serpyllifolia | GB, VC64 Mid-west Yorkshire, Hob Moor | G Webster | George Stephen West | 7/1877 | BIRM | 7/11/2009 |
| + | Polygala serpyllifolia | GB, VC92 South Aberdeenshire, Ben Macdui | William West | George Stephen West
William West | 17/8/1880 | BIRM | 7/11/2009 |
| + | Polygala serpyllifolia | GB, VC62 North-east Yorkshire, Scarborough | George Edward Massee | George Stephen West
William West | 1881 | BIRM | 7/11/2009 |
| + | Polygala vulgaris | GB, VC64 Mid-west Yorkshire, Grassington | William West | George Stephen West | 22/6/1887 | BIRM | 15/10/2009 |
| + | Polygala vulgaris | GB, VC64 Mid-west Yorkshire, Austwick | William West | George Stephen West
William West | 7/1907 | BIRM | 23/10/2009 |
| + | Polygala vulgaris | GB, VC6 North Somerset, Bath | Harold Stuart Thompson | Harold Stuart Thompson | 1/6/1921 | BIRM | 13/11/2009 |
| + | Polygala vulgaris subsp. collina | GB, VC58 Cheshire, Wallasey | John Harbord Lewis | Charles Bailey | 7/1879 | BIRM | 19/10/2009 |
| + | Polygala vulgaris subsp. collina | GB, VC28 West Norfolk, Cockley Cley | Douglas Montague Heath | Douglas Montague Heath | 22/5/1916 | BIRM | 14/11/2009 |
| + | Polygonatum multiflorum | GB, VC12 North Hampshire, Ashmansworth | William Charles Barton | Watson Botanical Exchange Club
Harold Stuart Thompson
William Charles Barton | 25/4/1916 | BIRM | 15/10/2009 |
| + | Polygonatum multiflorum | GB, VC6 North Somerset, Charterhouse | Harold Stuart Thompson | Harold Stuart Thompson | 24/6/1915 | BIRM | 15/10/2009 |
| + | Polygonatum multiflorum | GB, VC36 Herefordshire, Gorsty Hill Copse | Augustin Ley | Augustin Ley | 17/10/1882 | BIRM | 2/11/2009 |
| + | Polygonatum odoratum | GB, VC33 East Gloucestershire, Stanway | Douglas Montague Heath | Douglas Montague Heath | 26/6/1906 | BIRM | 18/10/2009 |
| + | Polygonatum odoratum | GB, VC64 Mid-west Yorkshire, Giggleswick Scar | Douglas Montague Heath | Douglas Montague Heath | 19/7/1930 | BIRM | 18/10/2009 |
| + | Potamogeton compressus | GB, VC38 Warwickshire, Arbury Park | Thomas Kirk | George Stephen West
Thomas Kirk | 6/1849 | BIRM | 2/11/2009 |
