Gozd navadnega gabra in evropske gomoljčice se, glede na višino talne vode, mozaično prepleta z gozdom doba in evropske gomoljčice. Tako ločitev med združbama v tem merilu ni bila mogoča. Združbi se pojavljata na občasno poplavljenih rastiščih, predvsem v Krakovskem gozdu, na prehodnem območju med preddinarskim in subpanonskim fitogeografskim območjem, kjer je letna količina padavin okrog 1100 mm, z maksimumoma maja in oktobra in izrazito ugodnim razporedom, saj pade več kot dve tretjini padavin v vegetacijski dobi. Prevladujejo psevdooglejena in oglejena tla. Nadmorska višina je okoli 160 m.

Diagnostična kombinacija rastlinskih vrst (Pseudostellario–Quercetum)
Drevesna plast: dob (Quercus robur), navadni gaber (Carpinus betulus), črna jelša (Alnus glutinosa).
Grmovna plast: Corylus avellana.
Zeliščna plast: Athyrium filix-femina, Cardamine pratensis, Carex brizoides, Crex remota, Dryopteris carthusiana, Glechoma hederacea, Lamium galeobdolon, Lysimachia nummularia, Pseudostellaria europaea, Pulmonaria dacica, Quercus robur.
Mahovna plast: Plagiomnium undulatum.

Diagnostična kombinacija rastlinskih vrst (Pseudostellario–Carpinetum)
Drevesna plast: navadni gaber (Carpinus betulus), dob (Quercus robur).
Grmovna plast: Corylus avellana, Carpinus betulus.
Zeliščna plast: Ajuga reptans, Anemone nemorosa, Athyrium filix-femina, Glechoma hederacea, Lamium galeobdolon, Paris quadrifolia, Polygonatum multiflorum, Pseudostellaria europaea, Pulmonaria dacica, Quercus robur.

Struktura gabrovega gozda je dvoplastna, dobov gozd pa je enoplasten. Izkoriščanje teh sestojev je omejeno, saj so to rastišča edinega nižinskega pragozda v Sloveniji.

Združbo navadnega gabra in evropske gomoljčice uvrščamo v zvezo Erythronio-Carpinion, združbo doba in evropske gomoljčice pa v zvezo Alnion incanae.

Forests of the Pseudostellario–Carpinetum betuli show a mosaic-like combination with forest of the Pseudostellario–Quercetum roboris that depends on the underground water level. The separation of the associations in this map scale was therefore not possible. These associations occur on periodically inundated sites. The greatest surfaces covers in the Krakovo forest, in the transitional area between the Predinaric and Subpannonian phytogeographical territories where the annual rainfall amounts to around 1,100 mm and reaches its maximums in May and October. Precipitation is suitably distributed with more than two thirds of the rainfall during the vegetation period. Planosol and Gleysol predominate. The altitude is around 160 meters.

Diagnostic combination of plant species (Pseudostellario–Quercetum)
Tree layer: Quercus robur, Carpinus betulus, Alnus glutinosa.
Shrub layer: Corylus avellana.
Herb layer: Athyrium filix-femina, Cardamine pratensis, Carex brizoides, Crex remota, Dryopteris cathusiana, Glechoma hederacea, Lamium galeobdolon, Lysimachia nummularia, Pseudostellaria europaea, Pulmonaria dacica, Quercus robur.
Moss layer: Plagiomnium undulatum.

Diagnostic combination of plant species (Pseudostellario–Carpinetum)
Tree layer: Carpinus betulus, Quercus robur.
Shrub layer: Corylus avellana, Carpinus betulus.
Herb layer: Ajuga reptans, Anemone nemorosa, Athyrium filix-femina, Glechoma hederacea, Lamium galeobdolon, Paris quadrifolia, Polygonatum multiflorum, Pseudostellaria europaea, Pulmonaria dacica, Quercus robur.

As far as structure is concerned, there are two layers in the hornbeam forest and one layer in the oak forest. The exploitation of these stands is limited since the only lowland virgin forest in Slovenia is located on these sites and the area is protected.

The Pseudostellario–Carpinetum betuli is classified in the alliance Erythronio–Carpinion and the Pseudostellario–Quercetum roboris in the alliance Alnion incanae.

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Accetto M. 1974: Združbi gabra in evropske gomoljčice ter doba in evropske gomoljčice v Krakovskem gozdu. Gozdarski vestnik 32(10): 357–369, 1975 33(1): 30–33.
Accetto M. 1995: Pseudostellario-Quercetum roboris leucojetosum aestivi subass. nova v Krakovskem gozdu. Biološki vestnik 40(3–4): 59–69.
Marinček L. & A. Čarni 2000: Die Unterverbände der Hainbuchenwälder des Verbandes Erythronio-Carpinion betuli (Horvat 1938) Marinček in Wallnöfer, Mucina et Grass 1993. Scopolia 45, 20 s.