Coltsfoot preparations are used for upper airways treatment. During procurement of this herbal raw material the following admixture may appear:

Answer options

1. Marsh mallow (Althaea officinalis)
2. Pot marjoram (Origanum vulgare)
3. Common plantain (Plantago major)
4. Spring adonis (Adonis vernalis)
5. Great bur (Arctium lappa)