text: secale sylvestre, apera spica-venti, bromus tectorum, chenopodium album, cynodon dactylon, descurainia sophia, euphorbia seguieriana, gypsophila perfoliata, leymus arenarius, medicago lupulina, melilotus albus, plantago arenaria, scirpoides holoschoenus, senecio vernalis, silene conica, xanthium spinosum