Orig. (Soó 1944): Carex echinata-Sphagnum ass. (S. acutifolium = S. capillifolium, S. recurvum)

Syn.: Junco filiformis-Sphagnetum recurvi Osvald 1923 p. p. (§ 3d, asociace uppsalské školy), Sphagnetum mixtum caricosum echinatae Soó 1934 (§ 3e), Carici echinatae-Sphagnetum Soó 1940 (§ 2b, nomen nudum), Caricetum canescenti-stellulatae Klika et Šmarda 1944 p. p. (§ 25), Caricetum echinatae sphagnosum Duda 1950, Carici echinatae-Sphagnetum recurvi-palustris Soó 1955, Caricetum goodenowii Braun 1915 sphagnetosum fallacis Dierssen 1982, Carici echinatae-Sphagnetum riparii (Balázs 1942) Soó 1955 corr. Lájer 1998 sphagnetosum flexuosi Lájer 1998, Sphagno flexuosi-Eriophoretum angustifolii Lájer 1998

Formal definition: (Sphagnum capillifolium s. l. cover > 50 % OR Sphagnum recurvum s. l. cover > 25 %) AND group Viola palustris NOT group Carex rostrata NOT Carex acutiformis cover > 5 % NOT Carex lasiocarpa cover > 5 % NOT Carex rostrata cover > 5 % NOT Juncus acutiflorus cover > 5 % NOT Scorpidium revolvens s. l. cover > 5 %