Swamps and tall-herb fens in the British National Vegetation Classification system
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In total, 28 swamp and tall-herb fen communities have been identified.
The swamp and tall-herb fen communities consist of three separate subgroups:
- twenty-one swamp communities, characterised by being species-poor, each dominated by an often tall or bulky monocotyledon species, with little or nothing in the way of an understorey: S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, S20 and S29
- five tall-herb fen communities, which have a more species-rich understorey than the swamps: S24, S25, S26, S27 and S28
List of swamp and tall-herb fen communities
The following is a list of the communities that make up this category:
- S23 Other water-margin vegetation Glycerio-Sparganion Br.-Bl. & Sissingh apud Boer 1942 emend. Segal
- S24 Phragmites australis - Peucedanum palustre tall-herb fen Peucedano-Phragmitetum australis Wheeler 1978 emend.
- S27 Carex rostrata - Potentilla palustris tall-herb fen Potentillo-Caricetum rostratae Wheeler 1980a