be, arr. sint-niklaas, populus balsamifera, crassula helmsii, cotula coronopifolia, erigeron canadensis, melilotus albus, carduus acanthoides, phragmites australis, geranium purpureum, senecio inaequidens, vulpia ciliata, angelica archangelica, reynoutria japonica, oenothera deflexa, tripolium pannonicum, solanum triflorum, solidago gigantea, atriplex prostrata, oenothera ersteinensis, epilobium ciliatum, corispermum pallasii, bolboschoenus maritimus, erigeron sumatrensis, populus nigra, epilobium hirsutum, sporobolus anglicus, lepidium didymum, cirsium arvense, tragopogon dubius, elymus athericus, eupatorium cannabinum, baccharis halimifolia, limonium vulgare, agrostis stolonifera, hirschfeldia incana, lepidium draba, bellardia viscosa, puccinellia maritima, salicornia procumbens, salicornia europaea, suaeda maritima, calystegia sepium, lolium multiflorum, melilotus officinalis, urtica dioica, sisymbrium altissimum, oenothera glazioviana, althaea officinalis, atriplex portulacoides, plantago arenaria, lathyrus latifolius