54.) GENTIANACEAE - Gentian family
- Centaurium erythraea Rafn (var. erythraea - Stace, NBN) (Common Centaury) / Grassland
- Centaurium erythraea x C. pulchellum (= C. x ubsdellii T.C.G. Rich - Stace) (NBN) (Common x Lesser Centaury) Grassland
- Centaurium pulchellum (Sw.) Druce (Lesser Centaury) - Grassland
- Blackstonia perfoliata (L.) Huds. (Yellow-wort) / Grassland
- Gentianella amarella (L.) Börner ssp. amarella (Autumn Gentian) - Grassland
- Gentianella amarella (L.) Börner ssp. anglica (Pugsley) T.C.G. Rich & McVeigh (Stace) Gentianella anglica (Pugsley) E.F. Warb. (NBN) (Early Gentian) 1955 Grassland