Submediteranska združba gradna in jesenske vilovine je aconalna združba na flišni matični podlagi in občasno tudi na jerovici. Najdemo jo na hladnih legah od nadmorske višine 100 do 400 m. Na teh rastiščih je vpliv submediteranske klime, zaradi geološke podlage je modificiran v smislu večje vlažnosti in bolj izravnanih temperaturnih razmer.

Diagnostična kombinacija rastlinskih vrst
Drevesna plast: graden (Quercus petraea), navadni gaber (Carpinus betulus).
Grmovna plast: Castanea sativa, Cornus sanguinea, Corylus avellana, Crataegus monogyna, Fraxinus ornus, Juniperus communis, Ligustrum vulgare, Quercus petraea, Sorbus tormninalis.
Zeliščna plast: Anemone nemorosa, Betonica officinalis, Carex flacca, Euphorbia dulcis, Festuca heterophylla, Hieracium racemosum var. barbatum, Lathyrus niger, L. vernus, Serratula tinctoria, Sesleria autumnalis, Vincetoxicum hirundinaria, Viola reichenbachiana.

V teh sestojih so drevesa na tem območju najvišja, saj znaša povprečna višina drevesne plasti 15 m, posamezna drevesa pa dosegajo 20 m. Najpogostejši premeri so od 15 do 30 cm, včasih pa celo 40 cm.

Združbo gradna in jesenske vilovine lahko uvrstimo med najboljše gozdove na tem območju. Gradnov les je uporaben za različne dejavnosti (gradbeni les, sodarstvo) in za kurjavo.

Združbo gradna in jesenske vilovine uvrščamo v zvezo Quercion pubescentis-petraeae.

The Seslerio autumnalis–Quercetum petraeae is an azonal association growing on flysch parent material and temporarily on chromic Cambisol (Terra rossa). It appears in the submediteranean region of Slovenia. It is found on cold sites at altitudes ranging from 100 to 400 meters. These sites are influenced by the Mediterranean climate. It is, however, modified in the sense of higher humidity and more equalized temperature conditions.

Diagnostic combination of plant species
Tree layer: Quercus petraea, Carpinus betulus.
Shrub layer: Castanea sativa, Cornus sanguinea, Corylus avellana, Crataegus monogyna, Fraxinus ornus, Juniperus communis, Ligustrum vulgare, Quercus petraea, Sorbus torminalis.
Herb layer: Anemone nemorosa, Betonica officinalis, Carex flacca, Euphorbia dulcis, Festuca heterophylla, Hieracium racemosum var. barbatum, Lathyrus niger, L. vernus, Serratula tinctoria, Sesleria autumnalis, Vincetoxicum hirundinaria, Viola reichenbachiana.

These stands have the highest trees in this region: the tree layer is fifteen meters high while individual trees can reach twenty meters. Most frequently, they have a diameter of 15 to 30 cm, sometimes even of 40 cm.

The forests of the Seslerio–Quercetum petraeae can be ranked among the highest quality forests in this area. The wood of the sessile oak is used for various activities (construction timber, cooperage) and fuel.

The Seslerio autumnalis–Quercetum petraeae is classified in the alliance Quercion pubescentis–petraeae.

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Poldini L. 1989: La vegetatione del Carso Isontino e Triestino. Lint. Trieste. 313 s.
Zupančič M. 1999: Novosti o gozdno-grmiščni vegetaciji slovenskega submediterana. Razprave IV. razreda SAZU 50: 195–313.