| Acer campestre | GB, VC3 South Devon, Teignmouth | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 1849 | BIRM |
| Aceras anthropophorum | | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 1847 | BIRM |
| Achillea millefolium | GB, VC3 South Devon, Teignmouth | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 7/1846 | BIRM |
| Achillea millefolium | GB, VC3 South Devon, Teignmouth | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 7/1846 | BIRM |
| Achillea ptarmica | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 9/8/1846 | BIRM |
| Achillea ptarmica | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 9/8/1846 | BIRM |
| Achillea ptarmica | GB, VC3 South Devon, Teignmouth | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 6/8/1880 | BIRM |
| Aegopodium podagraria | GB, VC38 Warwickshire, Birmingham | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 3/7/1852 | BIRM |
| Aegopodium podagraria | GB, VC38 Warwickshire, Birmingham | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | | BIRM |
| Aethusa cynapium | GB, VC3 South Devon, Teignmouth | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 7/1850 | BIRM |
| Agrostemma githago | GB, VC3 South Devon, Broadmeadow, Teignmouth | | Robert Coane Roberts Jordan | 1849 | BIRM |
| Agrostis gigantea | GB, VC3 South Devon, Teignmouth | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 1849 | BIRM |
| Agrostis stolonifera | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 3/8/1846 | BIRM |
| Agrostis stolonifera | GB, VC3 South Devon, Lympstone | | Robert Coane Roberts Jordan | 3/9/1846 | BIRM |
| Agrostis stolonifera | GB, VC3 South Devon, Teignmouth | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 1849 | BIRM |
| Agrostis stolonifera | GB, VC3 South Devon, Teignmouth | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 10/1880 | BIRM |
| Ajuga chamaepitys | GB, VC16 West Kent, Cobham | Robert Coane Roberts Jordan | | 8/1850 | BIRM |
| Alchemilla filicaulis subsp. vestita | GB, VC6 North Somerset, Nightingale Valley, Clifton | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 9/5/1849 | BIRM |
| Alchemilla vulgaris | GB, VC38 Warwickshire, Birmingham | R F | Robert Coane Roberts Jordan | 22/5/1858 | BIRM |
| Alliaria petiolata | GB, VC38 Warwickshire, Birmingham | | Robert Coane Roberts Jordan | 4/1874 | BIRM |
| Allium vineale | GB, VC3 South Devon, Teignmouth | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 1849 | BIRM |
| Alyssum alyssoides | GB, VC3 South Devon, Dawlish Warren | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 1844 | BIRM |
| Anagallis tenella | GB, VC3 South Devon, Haldon Hill | Robert Coane Roberts Jordan | | 7/1876 | BIRM |
| Angelica sylvestris | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 1846 | BIRM |
| Angelica sylvestris | GB, VC38,VC39, Perry Barr | | Robert Coane Roberts Jordan | | BIRM |
| Anisantha sterilis | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 31/7/1846 | BIRM |
| Anthriscus caucalis | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 5/1845 | BIRM |
| Anthyllis vulneraria | GB, VC3 South Devon, Teignmouth | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 4/1846 | BIRM |
| Aphanes arvensis | GB, VC38 Warwickshire, Birmingham | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 8/1852 | BIRM |
| Apium graveolens | GB, VC3 South Devon, Newton Abbot | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 8/1845 | BIRM |
| Apium graveolens | GB, Devon | | Robert Coane Roberts Jordan | 7/1876 | BIRM |
| Apium nodiflorum | GB, VC3 South Devon, Dartmoor | | Robert Coane Roberts Jordan | 6/1846 | BIRM |
| Arabidopsis thaliana | GB, VC3 South Devon, Bishopsteignton | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 26/4/1849 | BIRM |
| Arabis hirsuta | GB, VC3 South Devon, Haldon | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 1849 | BIRM |
| Arenaria serpyllifolia subsp. leptoclados | GB, VC3 South Devon, Lympstone | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 18/7/1846 | BIRM |
| Artemisia vulgaris | GB, VC3 South Devon, Teignmouth | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 1846 | BIRM |
| Artemisia vulgaris | GB, VC3 South Devon, Teignmouth | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 1846 | BIRM |
| Asparagus officinalis | GB, VC1 West Cornwall, Asparagus Island | Langley Kitching | Robert Coane Roberts Jordan | 25/7/1881 27/7/1881 | BIRM |
| Asperula cynanchica | GB, VC16 West Kent, Dartford | Robert Coane Roberts Jordan | Robert Coane Roberts Jordan | 1848 | BIRM |
| Asperula odorata | GB, VC5 South Somerset, Buckland Wood | Charles James Rufus Jordan | Robert Coane Roberts Jordan | 7/1846 | BIRM |