| Author | Title | Journal/publisher | Literature ref. no. |
| Clapham, A.R., Tutin, T.G. & Moore, D.M. (1989) | Flora of the British Isles. 3rd edition. | Cambridge University Press, Cambridge | 269 |
Note that the process of capturing references from species to the literature and the reverse may be incomplete.
| Species found: 4 |
| Ajuga reptans (cultivated) |
| Centaurea cyanus |
| Epilobium hirsutum |
| Rumex acetosella subsp. angiocarpus |