4.) NYMPHAEACEAE to CERATOPHYLLACEAE
- Nymphaea alba L. ssp. alba (White Water-lily) / Wetland
- Nymphaea alba L. × N. mexicana Zucc. (Kew) = N. x marliacea Lat.-Marl. (Stace) (Coloured Water-lily) - ours is with N. odorata?
- Nuphar lutea (L.) Sm. (Yellow Water-lily) / Wetland
- Houttuynia cordata Thunb. (Fish-plant) / - 1 record according to NBN General
- Asarum europaeum L. (Asarabacca) found in N. Somerset in 2022?
- Aristolochia clematitis L. (Birthwort) - 1 record according to NBN General
- Magnolia denudata Desr. × M. liliiflora Desr. = M. x soulangeana Soul.-Bod. (Chinese Magnolia - GBIF, Saucer Magnolia - Wikipedia) - - widely grown. General
- Liriodendron tulipifera L. (Tulip-tree) / - 46 records according to NBN
- Laurus nobilis L. (Bay) - General
- Ceratophyllum demersum L. (var. demersum - Stace, NBN, Kew, GBIF) (Rigid Hornwort) / Wetland
- Ceratophyllum submersum L. (Soft Hornwort) Wetland
See The Hornworts and their occurrence in Britain by C.I. Sandwith, 1926 (p. 303)