This key species were chosen after studying their connection with the other flora and fauna species, as they act as hosts for invertebrates or maintain ground cover, they provide shelter or food for the fauna species,etc. Thalophyta: Cladonia pyxidata, Leucobryum glaucum,Climacium dendroides,Tortula muralis,Asplenium ruta –muraria,Asplenium trichomanes,Asplenium ceterach.
Spermatophyta:Acer platanoides,Populus tremula,Carpinus betulus,Fraxinus excelsior,Cornus sanguinea,Pyrus pyraster,Querqus sp.,Corylus avellana,Crataegus monogyna,Agrimonia eupatoria,Allium flavum,Alyssum alyssoides,Ajuga reptans,Anthemis tinctoria,Aposeris foetida,Astragalus monspessulanus, Botriochloa ischaeum,Carex distans,Campanula persicifolia,Centaurea atropurpurea,Cephalantera longifolia, Chamaecytisus hirsutus,Cynoglossum officinalis,Dactyloriza incarnata,Dianthus carthusianorum, Dictamnus albus,Euphorbia cyparissias,Erysimum virgatum,Fragaria vesca,Gagea lutea,Genistella sagittalis,Geranium phaeum,Heleborus purpurascens,Hieracium pilosella,Iris aphylla ssp. hungarica,Iris pseudacorus,Jurinea mollis, Lotus corniculatus,Lychnis flos-cuculi,Festuca gigantea,Melampyrum bihariense,Rhinanthus minor,Melampyrum arvense,Minuartia setacea,Neottia nidus-avis,Origanum vulgare,Orlaya grandiflora,Plantago media,Poa pratensis,Potentilla erecta, Polygonatum odoratum, Primula sp., Rosa sp.,Rubus caesius,Salvia sp.,Sedum sp.,Teucrium chamaedrys,Thymus sp.,Tillia sp.Tusilago farfara,Urtica dioica.