| NAME OF PLANT | WHERE FOUND | DATE | WHERE FOUND | DATE |
| Crataegus laevigata | ||||
| Midland hawthorn | ||||
| Crataegus monogyna | ||||
| hawthorn | ||||
| Crepis biennis | ||||
| rough hawk's-beard | ||||
| Crepis capillaris | ||||
| smotth hawk's-beard | ||||
| Crepis paludosa | ||||
| marsh hawk's-beard | ||||
| Crepis vesicaria | ||||
| beaked hawk's-beard | ||||
| Crithmum maritimum | ||||
| rock samphire | ||||
| Crocosmia x crocosmiiflora | ||||
| montbretia | ||||
| Cruciata laevipes | ||||
| crosswort | ||||
| Cryptogramma crispa | ||||
| parsley fern | ||||
| Cuscuta epithymum | ||||
| dodder | ||||
| Cymbalaria muralis | ||||
| ivy-leaved toadflax | ||||
| Cynoglossum officinale | ||||
| hound's-tongue | ||||
| Cynosurus cristatus | ||||
| crested dog's-tail | ||||
| Cystopteris fragilis | ||||
| brittle bladder-fern | ||||
| Cytisus scoparius | ||||
| broom | ||||
| Daboecia cantabrica | ||||
| St Dabeoc's heath | ||||
| Dactylis glomerata | ||||
| cock's-foot | ||||
| Dactylorhiza fuchsii | ||||
| common spotted-orchid | ||||
| Dactylorhiza incarnata | ||||
| early marsh-orchid | ||||
| 25 | ||||