text: apera spica-venti, elymus repens, fallopia convolvulus, scleranthus annuus, setaria viridis, aphanes arvensis, arenaria serpyllifolia, centaurea cyanus, chenopodium album, cota tinctoria, draba verna, erigeron canadensis, tripleurospermum inodorum, veronica triphyllos, veronica verna, vicia sativa