quercus robur, fagus sylvatica, betula pendula, frangula alnus, lonicera periclymenum, sorbus aucuparia, vaccinium vitis-idaea, amelanchier lamarckii, ilex aquifolium, prunus serotina, quercus petraea, quercus rubra, convallaria majalis, oxalis acetosella, polygonatum multiflorum, polypodium vulgare, pteridium aquilinum