| Buxus sempervirens | GB, VC34 West Gloucestershire, Wotton Hill | Gustavus A Ornano St Brody | British Botanical Competition | 5/1863 | GLR |
| Caltha palustris var. guerangerii | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 5/1864 | GLR |
| Caltha palustris var. guerangerii | GB, VC59 South Lancashire, Read | | British Botanical Competition Lydia Ernestine Becker | 29/4/1864 | MANCH |
| Cardamine amara | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 6/1864 | GLR |
| Cardamine amara | GB, VC34 West Gloucestershire, Berkeley | Gustavus A Ornano St Brody | British Botanical Competition | 5/1864 | GLR |
| Cardamine impatiens | GB, VC34 West Gloucestershire, Mitcheldean | Gustavus A Ornano St Brody | British Botanical Competition | 7/1864 | GLR |
| Cardamine pratensis | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 6/1864 | GLR |
| Cardamine pratensis | GB, VC33 East Gloucestershire, Upton St Leonards | | British Botanical Competition | 5/1864 | GLR |
| Carex pendula | GB, Lancashire, Moreton Woods | | British Botanical Competition | 5/7/1864 | BON |
| Cerastium fontanum subsp. holosteoides | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 5/1864 | GLR |
| Cerastium glomeratum | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 5/1864 | GLR |
| Cerastium glomeratum | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 5/1864 | GLR |
| Cerastium semidecandrum | GB, VC34 West Gloucestershire, Over | Gustavus A Ornano St Brody | British Botanical Competition | 5/1864 | GLR |
| Chenopodium bonus-henricus | GB, VC34 West Gloucestershire, Beachley | Gustavus A Ornano St Brody | British Botanical Competition | 7/1864 | GLR |
| Chenopodium glaucum | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 9/1864 | GLR |
| Chenopodium polyspermum | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 9/1864 | GLR |
| Chenopodium urbicum | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 9/1864 | GLR |
| Cochlearia danica | GB, VC34 West Gloucestershire, Sharpness Point | Gustavus A Ornano St Brody | British Botanical Competition | 6/1864 | GLR |
| Colchicum autumnale | GB, VC59 South Lancashire, Portfield | | British Botanical Competition Lydia Ernestine Becker | 13/10/1864 | MANCH |
| Consolida ajacis | GB, VC33 East Gloucestershire, Cirencester | Gustavus A Ornano St Brody | British Botanical Competition | 7/1864 | GLR |
| Coronopus squamatus | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 6/1864 | GLR |
| Crataegus monogyna | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 6/1864 | GLR |
| Cystopteris fragilis | GB, VC34 West Gloucestershire, Lancaut | Gustavus A Ornano St Brody | British Botanical Competition | 9/1863 | GLR |
| Cytisus scoparius | GB, VC33 East Gloucestershire, Cranham | Gustavus A Ornano St Brody | British Botanical Competition | 5/1864 | GLR |
| Diplotaxis muralis | GB, VC33 East Gloucestershire, Gloucester | | British Botanical Competition | 7/1864 | GLR |
| Diplotaxis tenuifolia | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 7/1864 | GLR |
| Dryopteris carthusiana | GB, VC34 West Gloucestershire, Forest of Dean | Gustavus A Ornano St Brody | British Botanical Competition | 8/1864 | GLR |
| Dryopteris dilatata | GB, VC33 East Gloucestershire, Cranham | Gustavus A Ornano St Brody | British Botanical Competition | 8/1864 | GLR |
| Dryopteris dilatata | GB, VC34 West Gloucestershire, Forest of Dean | Gustavus A Ornano St Brody | British Botanical Competition | 8/1864 | GLR |
| Dryopteris dilatata | GB, VC34 West Gloucestershire, Forest of Dean | Gustavus A Ornano St Brody | British Botanical Competition | 8/1864 | GLR |
| Dryopteris dilatata | GB, VC34 West Gloucestershire, Forest of Dean | Gustavus A Ornano St Brody | British Botanical Competition | 9/1864 | GLR |
| Dryopteris filix-mas | GB, VC33 East Gloucestershire, Cranham | Gustavus A Ornano St Brody | British Botanical Competition | 10/1864 | GLR |
| Dryopteris filix-mas | GB, VC34 West Gloucestershire, Mitcheldean | Gustavus A Ornano St Brody | British Botanical Competition | 9/1864 | GLR |
| Equisetum fluviatile | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 8/1865 | GLR |
| Equisetum telmateia | GB, VC33 East Gloucestershire, Cranham | Gustavus A Ornano St Brody | British Botanical Competition | 8/1868 | GLR |
| Erophila verna | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 4/1864 | GLR |
| Erophila verna var. praecox | GB, VC33 East Gloucestershire, Whitcomb | | British Botanical Competition | 7/1864 | GLR |
| Erysimum cheiranthoides | GB, VC33 East Gloucestershire, Gloucester | Gustavus A Ornano St Brody | British Botanical Competition | 9/1863 | GLR |
| Euonymus europaeus | GB, VC34 West Gloucestershire, Forest of Dean | | British Botanical Competition | 5/1864 | GLR |
| Euonymus europaeus | GB, VC34 West Gloucestershire, Hartpury | Gustavus A Ornano St Brody | British Botanical Competition | 5/1864 | GLR |