Mosses: The presence of most of the following species has been verified since 1975. Those species presumed extinct or not seen recently are listed separately.

See also Mike Lock's account of the bryophytes of Wicken Fen published in 1968.

Liverworts: The presence of most of the following species has been verified since 1975. Those species presumed extinct or not seen recently are listed separately.

Mosses of Wicken Fen

AMBLYSTEGIACEAE:
Amblystegium riparium Uncommon on bases of trees in or close to water level.
Amblystegium serpens Frequent at base of old Salix and Frangula bushes usually in carr.
Calliergon cuspidatum Very common on the ground both in carr and also in sedge fields.
Campylium elodes
Campylium polygamum Occasional in open wet places in sedge fields.
Campylium stellatum var. protensum (recorded 1989); var. stellatum last recorded 1979.
Cratoneuron filicinum
Drepanocladus aduncus Occasional in pools by Sedge Fen Drove.

AULACOMNIACEAE
Aulacomnium androgynum Occasional. Commonest as an epiphyte on old horizontal branches of willows in carr.
Aulacomnium palustre Rare in the driest parts of the carr. Seen on Verrall's Fen

BRACHYTHECIACEAE
Brachythecium rivulare
Brachythecium rutabulum Common on the ground usually in partially shaded and disturbed places.
Brachythecium salebrosum
Brachythecium velutinum
Cirriphyllum piliferum Verralls Fen
Eurhynchium praelongum
Eurhynchium speciosum
Eurhynchium striatum
Pseudoscleropodium purum
Rhynchostegium confertum

BRYACEAE
Bryum argenteum Uncommon usually in artificial sites such as the gaps between bridge planks.
Bryum bicolor On old bog oaks by Sedge fen Drove.
Bryum caespiticium
Bryum capillare Usually epiphytic on old more-or-less horizontal willow branches.
Bryum flaccidum
Bryum pseudotriquetrum var. bimum
Bryum rubens
Orthodontium lineare Occasional usually at the base of large trees. Fruits abundantly.
Pohlia nutans

CLIMACIACEAE
Climacium dendroides

CRYPHAEACEAE
Cryphaea heteromalla One small tuft on an elder by the boardwalk near Wicken Lode.

DICRANACEAE
Campylopus introflexus
Campylopus paradoxus
Campylopus pyriformis
Ceratodon purpureus On artificial habitats such as old railway sleepers often with Bryum argenteum.
Dicranella heteromalla
Dicranoweisia cirrata Always epiphytic usually on old willows.
Dicranum scoparium Occasional in drier places in carr. Also occasionally epiphytic.

FISSIDENTACEAE
Fissidens adianthoides Occasional on the ground in drier parts of carr.
Fissidens incurvus On clay bank behind brickpits; in partial shade.
Fissidens taxifolius On clay bank behind brickpits in partial shade.

FUNARIACEAE
Funaria hygrometrica Frequent around bonfire sites only.
Physcomitrium pyriforme

HYPNACEAE
Ctenidium molluscum
Hylocomium brevirostre
Hylocomium splendens
Hypnum cupressiforme var. cupressiforme and var. resupinatum
Hypnum jutlandicum
Pleurozium schreberi Occasional in the driest parts of the carr. On Verralls Fen in 1985
Rhytidiadelphus loreus
Rhytidiadelphus squarrosus

LESKEACEAE
Leskea polycarpa

LEUCOBRYACEAE
Leucobryum glaucum

MNIACEAE
Mnium hornum
Plagiomnium affine Frequent in carr on the ground usually in unflooded sites.
Plagiomnium elatum (Mnium seligeri)
Plagiomnium ellipticum
Plagiomnium undulatum
Rhizomnium punctatum

ORTHOTRICHACEAE
Orthotrichum affine Always epiphytic usually on old sallows in carr.
Orthotrichum diaphanum On old willows in carr and on elders at the fen margin.
Orthotrichum pulchellum Uncommon On old elder. First record for Cambridgeshire.
Ulota crispa var. norvegica. By the Brickpits and old prostrate Salix cinerea trunks near Barnes' Mere.

PLAGIOTHECIACEAE
Plagiothecium curvifolium
Plagiothecium denticulatum
Plagiothecium nemorale
Plagiothecium undulatum

POLYTRICHACEAE
Atrichum undulatum Occasional in the drier parts of the carr sometimes forming patches up to 30 cm in diameter.
Polytrichum commune A few patches seen on Verrall's Fen in summer 1988 and a few shoots in Feb.1989.
Polytrichum formosum
Polytrichum longisetum

POTTIACEAE
Barbula convoluta
Barbula tophacea
Tortula laevipila
Tortula muralis On concrete post and edging stones.

SPHAGNACEAE
Sphagnum fimbriatum Scattered clumps mainly on Verrall's Fen.
Sphagnum palustre Scattered clumps in Godwin Plots; by Verrall's Drove; on Verrall's Fen.
Sphagnum recurvum
Sphagnum squarrosum Occasional clumps in carr in the Godwin Plots by Verrall's Drove and on Verrall's Fen.
Sphagnum subnitens Occasional clumps on Verrall's Fen; Godwin plots by Verrall's Drove.

THUIDIACEAE
Thuidium tamariscinum

Musci presumed extinct or not seen recently (since 1975) at Wicken Fen
Amblystegium varium (Amblystegiaceae)
Campylopus brevipilus (Dicranaceae) Godwin Plots area
Cratoneuron commutatum (Amblystegiaceae)
Eurhynchium swartzii (Brachytheciaceae)
Fontinalis antipyretica (Fontinalaceae)
Hookeria lucens (Hookeriaceae) In acid sites in deep shade of carr.
Isothecium myurum (Brachytheciaceae) Last seen St.Edmunds Fen.
Leptobryum pyriforme (Bryaceae)
Polytrichum juniperinum (Polytrichaceae)
Tetraphis pellucida (Tetraphidaceae)

Liverworts of Wicken Fen

The presence of most of the following species has been verified since 1975. Those species presumed extinct or not seen recently are listed separately.

ANEURACEAE
Aneura pinguis
Riccardia chamaedryfolia

CALYPOGEIACEAE
Calypogeia fissa

CEPHALOZIACEAE
Cephalozia bicuspidata

FRULLANIACEAE
Frullania dilatata Rare On Salix pentandra between Sedge Fen Drove & Spinney Bank

GEOCALYCACEAE
Chiloscyphus pallescens
Lophocolea bidentata
Lophocolea heterophylla

METZGERIACEAE
Metzgeria fruticulosa Uncommon. One patch on an old elder.

RADULACEAE
Radula complanata

RICCIACEAE
Riccia fluitans Sporadic ditches at end of Sedge Fen Drove (1989) and at NE end of Reedfield by Harrison's Drove.
Ricciocarpos natans

Hepatics presumed extinct or not seen recently (since 1975) at Wicken Fen