| Aster tripolium | GB, VC3 South Devon, River Teign | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 9/1847 | BIRM |
| Astragalus glycyphyllos | GB, VC16 West Kent, Darenth Wood | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 5/7/1848 | BIRM |
| Atriplex | GB, VC3 South Devon, Teignmouth | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 5/8/1880 | BIRM |
| Atriplex portulacoides | GB, Lincolnshire | Joseph Hesselgrave Thompson | Martha Maria Atwood Robert Coane Roberts Jordan Joseph Hesselgrave Thompson | 1852 | BIRM |
| Atriplex portulacoides | GB, VC58 Cheshire, Wallasey | John Dugdale | Robert Coane Roberts Jordan | 8/1851 | BIRM |
| Atropa belladonna | | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 1848 | BIRM |
| Atropa belladonna | GB, VC3 South Devon, Teignmouth | | Robert Coane Roberts Jordan | | BIRM |
| Ballota nigra | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 16/7/1846 | BIRM |
| Barbarea stricta | GB, VC38 Warwickshire, Edgbaston | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 14/5/1852 | BIRM |
| Barbarea stricta | GB, VC39 Staffordshire, Harborne | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 14/5/1852 | BIRM |
| Barbarea verna | GB, VC3 South Devon, Dawlish Warren | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 7/4/1849 | BIRM |
| Barbarea verna | GB, VC3 South Devon, Teignmouth, Holcombe | G Baker | Robert Coane Roberts Jordan | 4/1881 | BIRM |
| Beta vulgaris subsp. maritima | GB, VC34 West Gloucestershire, Sea Mills | Martha Maria Atwood | Robert Coane Roberts Jordan | 8/1853 | BIRM |
| Borago officinalis | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 4/8/1846 | BIRM |
| Bupleurum subovatum | GB, VC38 Warwickshire, Ladywood | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | | BIRM |
| Bupleurum subovatum | GB, VC38 Warwickshire, Ladywood | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | | BIRM |
| Cakile maritima | GB, VC48 Merionethshire, Tywyn | Emily Francis Jordan | Robert Coane Roberts Jordan | 8/1880 | BIRM |
| Callitriche intermedia | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 31/7/1846 | BIRM |
| Calluna vulgaris | GB, VC3 South Devon, Haldon | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 1846 | BIRM |
| Calystegia sepium | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | | 15/7/1846 | BIRM |
| Campanula latifolia | GB, VC77 Lanarkshire, Falls of Clyde | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 24/8/1852 | BIRM |
| Campanula patula | GB, VC37 Worcestershire, Hagley | | Robert Coane Roberts Jordan | | BIRM |
| Campanula trachelium | GB, VC16 West Kent, Darenth | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 8/1850 | BIRM |
| Campanula trachelium | GB, VC16 West Kent, Darenth Wood | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 8/1850 | BIRM |
| Campanula trachelium | GB, VC57 Derbyshire, Matlock | Robert Coane Roberts Jordan | | 18/6/1863 | BIRM |
| Cardamine amara | GB, VC38 Warwickshire, Birmingham | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 14/5/1852 | BIRM |
| Cardamine hirsuta | GB, VC37 Worcestershire, Lickey | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 4/1874 | BIRM |
| Cardamine impatiens | GB, VC57 Derbyshire, Matlock Bath | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 20/6/1859 | BIRM |
| Cardamine pratensis | GB, VC37,VC38,VC39, Harborne | | Robert Coane Roberts Jordan | 4/1874 | BIRM |
| Carduus acanthoides | GB, VC30 Bedfordshire, Leighton Buzzard | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 7/1852 | BIRM |
| Carex aquatilis | GB, Ambiguous locality (GB), River Esk | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | | BIRM |
| Carex curta | GB, VC62 North-east Yorkshire, Thirsk | | Robert Coane Roberts Jordan | 6/1864 | BIRM |
| Carex elata | GB, VC64 Mid-west Yorkshire, Askham Bog | | Robert Coane Roberts Jordan | 6/1863 | BIRM |
| Carex flacca | GB, VC3 South Devon, Teignmouth,Shaldon | Robert Coane Roberts Jordan | | 8/1880 | BIRM |
| Carex ovalis | GB, VC62 North-east Yorkshire, York | | Robert Coane Roberts Jordan | 6/1863 | BIRM |
| Carex riparia | GB, VC18 South Essex, Epping | | Robert Coane Roberts Jordan | 26/5/1861 | BIRM |
| Carex vesicaria | GB, VC62 North-east Yorkshire, Clifton Ings | | Robert Coane Roberts Jordan | 6/1863 | BIRM |
| Castanea sativa | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 7/1846 | BIRM |
| Centaurea calcitrapa | GB, VC16 West Kent, Gravesend | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 8/1850 | BIRM |
| Centaurea solstitialis | GB, VC37 Worcestershire, Hartlebury | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 9/9/1876 | BIRM |