| Epipactis helleborine | GB, VC38 Warwickshire, Kenilworth | Thomas Kirk | Charles Bailey | | MANCH |
| Potamogeton obtusifolius | GB, VC38 Warwickshire, Kenilworth | Thomas Kirk | Charles Bailey | | MANCH |
| Sanguisorba minor subsp. muricata | GB, VC38 Warwickshire, Kenilworth | John Gilbert Baker Thomas Kirk | George Stephen West | 7/1850 | BIRM |
| Sanguisorba minor subsp. muricata | GB, VC38 Warwickshire, Kenilworth | Thomas Kirk | George Stephen West | 26/6/1853 | BIRM |
| Sanguisorba minor subsp. muricata | GB, VC38 Warwickshire, Kenilworth | | George Stephen West Thomas Kirk | 7/1850 | BIRM |
+ | Crepis biennis | GB, VC38 Warwickshire, Leek Wootton | Thomas Kirk | John Hutton Balfour | | PTH |
| Salix fragilis var. russelliana | GB, VC38 Warwickshire, Pinley | Thomas Kirk | Donor Unknown | 4/1854 to 9/1854 | BIRM |
| Salix viminalis x caprea = S. x smithiana | GB, VC38 Warwickshire, Pinley | Thomas Kirk | Donor Unknown | 4/1854 to 9/1854 | BIRM |
| Salix viminalis x cinerea = S. x holosericea | GB, VC38 Warwickshire, Pinley | Thomas Kirk | Charles Bailey | 4/1854 to 9/1854 | MANCH |
| Salix fragilis x triandra = S. x alopecuroides | GB, VC38 Warwickshire, Quinton Pool | Thomas Kirk | IRGMA | 4/1849 10/1852 | LIV |
| Ceratophyllum demersum | GB, VC38 Warwickshire, Sowe | Thomas Kirk | Donor Unknown | 6/1849 | BIRM |
| Ceratophyllum demersum | GB, VC38 Warwickshire, Sowe | Thomas Kirk | George Stephen West | 6/1849 | BIRM |
| Elodea canadensis | GB, VC38 Warwickshire, Sowe Waste, Coventry | Thomas Kirk | | | E |
| Potamogeton lucens | GB, VC38 Warwickshire, Sowe Waste, Coventry | Thomas Kirk | Charles Bailey John Harbord Lewis | 8/1858 | MANCH |
| Potamogeton obtusifolius | GB, VC38 Warwickshire, Sowe Waste, Coventry | Thomas Kirk | Charles Bailey | 8/1858 | MANCH |
| Carex pseudocyperus | GB, VC38 Warwickshire, Stoke Aldmoor | Patrick Neill Fraser | Thomas Kirk | 8/1859 | E |
| Callitriche platycarpa | GB, VC38 Warwickshire, Stoke Heath | Thomas Kirk | George Stephen West Thomas Kirk | 6/1849 | BIRM |
| Potamogeton filiformis | GB, VC38 Warwickshire, Stoke Heath | Thomas Kirk | William Hadden Beeby | | SLBI |
| Potamogeton pectinatus | GB, VC38 Warwickshire, Stoke Heath | Thomas Kirk | Charles Bailey William Lowndes Notcutt | 5/1854 to 7/1854 | MANCH |
| Potamogeton pectinatus | GB, VC38 Warwickshire, Stoke Heath | John Gilbert Baker Thomas Kirk | George Stephen West | 5/1852 | BIRM |
| Helleborus viridis subsp. occidentalis | GB, VC38 Warwickshire, Studley | Thomas Kirk | George Stephen West Thomas Kirk | 5/1850 | BIRM |
| Potamogeton polygonifolius | GB, VC38 Warwickshire, Warwick | Thomas Kirk | | | BIRM |
+ | Valerianella dentata | GB, VC38 Warwickshire, Warwick | Thomas Kirk | Samuel Octavus Gray | 8/1834 | MANCH |
+ | Valerianella dentata | GB, VC38 Warwickshire, Warwick | Thomas Kirk | Charles Bailey William Lowndes Notcutt | 8/1854 | MANCH |
+ | Potamogeton compressus | GB, VC38 Warwickshire, Warwick,Stoke Heath | Thomas Kirk | Charles Bailey John Harbord Lewis | | MANCH |
+ | Potamogeton friesii | GB, VC38 Warwickshire, Warwick,Stoke Heath | Thomas Kirk | Charles Bailey | 7/1856 | MANCH |
+ | Thalictrum flavum | GB, VC38 Warwickshire, Warwickshire | John Gilbert Baker Thomas Kirk | | 1898 | BIRM |
| Epipactis helleborine | GB, VC38 Warwickshire, Weston under Wetherley | Thomas Kirk | Charles Bailey William Lowndes Notcutt | 8/1854 | MANCH |
| Nepeta cataria | GB, VC38 Warwickshire, Whitley | | George Stephen West Thomas Kirk | 7/1847 | BIRM |
| Carex rostrata | GB, VC38 Warwickshire, Whitmore Park | Thomas Kirk | Fleming Society John Sadler | 7/1855 | E |
| Carex flacca | GB, VC38 Warwickshire, Wyken | Thomas Kirk | Charles Ottley Groom | 31/5/1854 to 7/1855 | BON |
| Salix viminalis x caprea = S. x smithiana | GB, VC38 Warwickshire, Wyken | Thomas Kirk | IRGMA | 25/4/1853 19/9/1853 | LIV |
| Salix viminalis x cinerea = S. x holosericea | GB, VC38 Warwickshire, Wyken | Thomas Kirk | Charles Bailey William Lowndes Notcutt | 4/1854 9/1854 | MANCH |
+ | Campanula rapunculus | GB, VC39 Staffordshire | Thomas Kirk | Botanical Exchange Club Charles Bailey John (Joannis) Fraser | 7/1879 | MANCH |
| Salix pentandra x fragilis = S. x meyeriana | GB, VC40 Shropshire, Shrewsbury Cultivated | Thomas Kirk | Augustin Ley | 6/1853 to 10/1853 | BIRM |
| Calluna vulgaris | GB, VC49 Caernarvonshire, Bwlch yr Haiarn | Thomas Kirk | Augustin Ley | 9/1849 | BIRM |
| Potamogeton coloratus x berchtoldii = P. x lanceolatus | GB, VC52 Anglesey, Bodafon | Thomas Kirk | Botanical Exchange Club of the Thirsk Natural History Society Charles Bailey John Ray Hardy | 9/1858 | MANCH |
| Potamogeton coloratus x berchtoldii = P. x lanceolatus | GB, VC52 Anglesey, Bodafon | Thomas Kirk | Thirsk Natural History Society Mantua And Montferrat | 9/1858 | BON |
| Potamogeton coloratus x berchtoldii = P. x lanceolatus | GB, VC52 Anglesey, Bodafon | Thomas Kirk | G Smith William Hunt Painter | | ABS |
| Potamogeton coloratus x berchtoldii = P. x lanceolatus | GB, VC52 Anglesey, Bodafon | | Thomas Kirk | 9/1858 | E |