Class PB (OXY)
Oxycocco-Sphagnetea Br.-Bl. et Tx. ex Westhoff et al. 1946
Dwarf-shrub, sedge and peat-moss vegetation of the Holarctic ombrotrophic bogs and wet heath on extremely acidic soils
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Diagnostic taxa
Vascular plants:
Andromeda polifolia,
Betula nana,
Betula pubescens var. pubescens,
Calamagrostis purpurea subsp. purpurea,
Calluna vulgaris,
Carex durieui,
Carex parviflora,
Carex pauciflora,
Chamaedaphne calyculata,
Dactylorhiza majalis subsp. sphagnicola,
Drosera rotundifolia,
Erica tetralix,
Eriophorum vaginatum,
Huperzia selago subsp. arctica,
Juncus squarrosus,
Kalmia angustifolia,
Lycopodiella inundata,
Narthecium ossifragum,
Pinguicula villosa,
Pinus mugo subsp. rotundata,
Rhododendron tomentosum,
Rubus chamaemorus,
Sarracenia purpurea,
Vaccinium macrocarpon,
Vaccinium microcarpum,
Vaccinium oxycoccos,
Vaccinium uliginosum
Bryophytes:
Aulacomnium palustre,
Calypogeia sphagnicola,
Campylopus brevipilus,
Cephalozia connivens,
Cephalozia loitlesbergeri,
Dicranum leioneuron,
Dicranum undulatum,
Gymnocolea inflata,
Heterogemma laxa,
Kurzia pauciflora,
Leiomylia anomala,
Odontoschisma sphagni,
Polytrichum strictum,
Sphagnum affine,
Sphagnum angustifolium,
Sphagnum austinii,
Sphagnum balticum,
Sphagnum capillifolium,
Sphagnum compactum,
Sphagnum cuspidatum,
Sphagnum fuscum,
Sphagnum magellanicum,
Sphagnum molle,
Sphagnum papillosum,
Sphagnum pulchrum,
Sphagnum pylaesii,
Sphagnum rubellum,
Sphagnum russowii,
Sphagnum strictum,
Sphagnum tenellum