| Antennaria dioica | GB, VC90 Angus, Clova | Alexander Baines | Charles Bailey Frederick Thompson Mott Thomas Thorp | 7/1873 | MANCH |
+ | Anthemis arvensis | GB, VC55 Leicestershire | | Charles Bailey Frederick Thompson Mott | 21/8/1881 | MANCH |
+ | Anthemis arvensis | GB, VC55 Leicestershire | B Coster | Charles Bailey Frederick Thompson Mott | 6/1891 | MANCH |
+ | Anthemis arvensis | GB, VC55 Leicestershire, Leicester | Frederick Thompson Mott | Charles Bailey Frederick Thompson Mott Thomas Thorp | 11/10/1875 | MANCH |
+ | Anthemis arvensis | GB, VC55 Leicestershire, Leicester | Frederick Thompson Mott | Charles Bailey Frederick Thompson Mott Thomas Thorp | 10/6/1885 | MANCH |
+ | Anthemis arvensis | GB, VC55 Leicestershire, Smithland | J P | Charles Bailey Frederick Thompson Mott | 8/1897 | MANCH |
+ | Anthemis cotula | GB, VC13 West Sussex | | Charles Bailey Frederick Thompson Mott Thomas Thorp | 8/1872 | MANCH |
+ | Anthemis cotula | GB, VC55 Leicestershire, Burbage | | Charles Bailey Frederick Thompson Mott Thomas Thorp | 7/1886 | MANCH |
+ | Anthemis cotula | GB, VC55 Leicestershire, Burbage | | Charles Bailey Frederick Thompson Mott Thomas Thorp | 7/1892 | MANCH |
+ | Anthemis cotula | GB, VC55 Leicestershire, Kilworth | | Charles Bailey Frederick Thompson Mott Thomas Thorp | 15/9/1875 | MANCH |
+ | Anthemis cotula | GB, VC55 Leicestershire, Tugby | | Charles Bailey Frederick Thompson Mott Thomas Thorp | 2/8/1878 | MANCH |
| Anthemis tinctoria | GB, VC6 North Somerset, Bath | Frederick Thompson Mott | | 10/7/1898 | SLBI |
| Apium nodiflorum x inundatum = A. x moorei | GB | Balfour | Charles Bailey Frederick Thompson Mott Thomas Thorp | | MANCH |
| Armeria maritima | GB, VC113 Channel Islands, Jersey | | Frederick Thompson Mott | 2/7/1895 | SLBI |
+ | Arnoseris minima | GB, VC24 Buckinghamshire, Brickhill | J Saunders | Charles Bailey Frederick Thompson Mott Thomas Thorp | 29/7/1889 | MANCH |
| Artemisia absinthium | GB, VC6 North Somerset, Bath | Frederick Thompson Mott | | 9/1890 | SLBI |
+ | Astragalus danicus | GB, VC82 East Lothian, Gosford | Richard McKay | Charles Bailey Frederick Thompson Mott | 20/7/1870 | MANCH |
+ | Astragalus danicus | Dunbar | Barnes | Charles Bailey Frederick Thompson Mott | 8/1873 | MANCH |
+ | Astragalus danicus | GB, VC28 West Norfolk, Mundford | Barnes | Charles Bailey Frederick Thompson Mott | 1865 | MANCH |
+ | Astragalus danicus | GB, VC55 Leicestershire, Saltby | Frederick Thompson Mott | Charles Bailey Frederick Thompson Mott | 6/1887 | MANCH |
+ | Baldellia ranunculoides | GB, VC41 Glamorganshire, Swansea | R Brewin | Charles Bailey Frederick Thompson Mott Thomas Thorp | 7/1843 | MANCH |
| Bidens cernua | GB, VC6 North Somerset, Edington | Frederick Thompson Mott | | 8/1894 | SLBI |
+ | Blysmus compressus | GB, VC57 Derbyshire, Buxton,Wye Valley | Frederick Thompson Mott | Charles Bailey Frederick Thompson Mott | 3/8/1881 | MANCH |
| Bromus arvensis | GB, VC55 Leicestershire, Cropston Reservoir | Frederick Thompson Mott | Botanical Exchange Club of The British Isles Augustin Ley Frederick Thompson Mott | | BIRM |
+ | Bromus interruptus | GB, VC23 Oxfordshire, Brightwell-Salome | George Claridge Druce | Charles Bailey Frederick Thompson Mott | 6/1901 | MANCH |
+ | Bromus secalinus | GB, VC113 Channel Islands, Jersey | | Charles Bailey Frederick Thompson Mott | 8/1872 | MANCH |
+ | Bupleurum rotundifolium | | J Norris | Charles Bailey Frederick Thompson Mott Thomas Thorp | 3/1890 | MANCH |
+ | Bupleurum rotundifolium | GB, VC55 Leicestershire, Bristol Hill | | Charles Bailey Frederick Thompson Mott Thomas Thorp | 7/1902 | MANCH |
+ | Bupleurum rotundifolium | GB, VC55 Leicestershire, Bristol Hill | | Charles Bailey Frederick Thompson Mott Thomas Thorp | 6/1905 | MANCH |
| Butomus umbellatus | | | Charles Bailey Frederick Thompson Mott Thomas Thorp | | MANCH |
| Butomus umbellatus | GB, VC38,VC39, Tamworth | | Charles Bailey Frederick Thompson Mott Thomas Thorp | | MANCH |
| Butomus umbellatus | GB, VC55 Leicestershire, Leicester | | Charles Bailey Frederick Thompson Mott Thomas Thorp | 1886 | MANCH |
| Butomus umbellatus | GB, VC55 Leicestershire, Swans Mill | | Charles Bailey Frederick Thompson Mott Thomas Thorp | | MANCH |
| Butomus umbellatus | GB, VC55 Leicestershire, Syston | | Frederick Thompson Mott | | MANCH |
+ | Calamintha arvensis | GB, VC28 West Norfolk, Hunstanton | Edgar Franklin Cooper | Charles Bailey Frederick Thompson Mott | 20/7/1898 | MANCH |
+ | Calamintha arvensis | GB, VC55 Leicestershire, Saltby | | Charles Bailey Frederick Thompson Mott Thomas Thorp | 8/1886 | MANCH |
+ | Calamintha arvensis | GB, VC57 Derbyshire, Millers Dale | | Charles Bailey Frederick Thompson Mott | 1879 | MANCH |
| Caltha palustris var. guerangerii | GB, VC55 Leicestershire, Aylestone | Frederick Thompson Mott | Charles Bailey Frederick Thompson Mott | 8/6/1876 | MANCH |
| Caltha palustris var. guerangerii | GB, VC55 Leicestershire, Leicester | Frederick Thompson Mott | Frederick Thompson Mott | 5/1843 | MANCH |
| Caltha palustris var. guerangerii | GB, VC55 Leicestershire, Narborough | Frederick Thompson Mott | Frederick Thompson Mott Charles Bailey | 5/1888 | MANCH |