text: apera spica-venti, aphanes arvensis, buglossoides arvensis, anthoxanthum aristatum, arabidopsis thaliana, equisetum arvense, erigeron canadensis, fallopia convolvulus, galeopsis ladanum, geranium pusillum, holcus lanatus, hypochaeris glabra, polygonum aviculare, scleranthus annuus, scorzoneroides autumnalis, teesdalia nudicaulis, veronica arvensis, veronica dillenii, veronica hederifolia, veronica verna, vicia sativa, viola arvensis