Orig. (Schlüter 1966): Calamagrostio villosae-Piceetum (Picea abies)

Syn.: Lophozio-Piceetum Volk in Br.-Bl. et al. 1939 (potenciální správné jméno), Sphagno-Piceetum (Tüxen 1937) Hartmann 1953 (potenciální správné jméno, § 36, nomen ambiguum rejiciendum propositum), Anastrepto-Piceetum Stöcker 1967, Calamagrostio villosae-Piceetum Hartmann in Hartmann et Jahn 1967, Vaccinio myrtilli-Piceetum Šoltés 1976, Dryopterido dilatatae-Piceetum Sýkora ex Sofron 1981

Formal definition: Picea abies cover > 25 % AND group Trientalis europaea NOT group Frangula alnus NOT group Oxalis acetosella NOT group Petasites albus NOT Abies alba cover > 5 % NOT Adenostyles alliariae cover > 5 % NOT Alnus glutinosa cover > 5 % NOT Athyrium distentifolium cover > 25 % NOT Betula pubescens cover > 25 % NOT Caltha palustris cover > 5 % NOT Carex brizoides cover > 5 % NOT Carpinus betulus cover > 5 % NOT Fagus sylvatica cover > 5 % NOT Pinus sylvestris cover > 5 % NOT Quercus petraea agg. cover > 5 % NOT Quercus robur cover > 5 % NOT Sphagnum sp. cover > 5 %