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
two communities termed "water-margin vegetation":
S22 and
S23
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: