A number of plant species which are otherwise scarce or absent in the Bristol region are found in high concentrations on the North Somerset Levels, including water horsetail (Equisetum fluviatile), rigid (Ceratophyllum demersum) and soft (C. submersum) hornworts, thread-leaved (Ranunculus trichophyllus), common (R. aquatilis) and fan-leaved (R. circinatus) water-crowfoots, lesser water-parsnip (Berula erecta), tubular (Oenanthe fistulosa) and fine-leaved (O. aquatica) water-dropworts, tufted forget-me-not (Myosotis laxa subsp. caespitosa), skullcap and fen bedstraw (Galium uliginosum).
A variety of plant species, which are uncommon or absent in the Bristol region, are found in high concentrations on the North Somerset Levels, including water horsetail (Equisetum fluviatile), rigid hornwort (Ceratophyllum demersum), and soft hornwort (C. submersum).  Thread-leaved water crowfoot (Ranunculus trichophyllus), common water crowfoot (R. aquatilis), and fan-leaved water crowfoot (R. circinatus) are also present, along with lesser water parsnip (Berula erecta), tubular water dropwort (Oenanthe fistulosa), fine-leaved water dropwort (O. aquatica), tufted forget-me-not (Myosotis laxa subsp. caespitosa), skullcap and fen bedstraw (Galium uliginosum).