SEARCH Articles Figures Tables Ferns Polypodium vulgare Osladin from Polypodium vulgare Polypodium azoricum Polypodium fauriei Polypodium formosanum Polypodium glycyrrhiza Polypodium glycyrrhiza polypodoside A from Polypodium glycyrrhiza polypodoside B from Polypodium glycyrrhiza steroidal saponin from Polypodium juglandifolium H.B.Willd Polypodium niponicum Polypodium vulgare Polypodium vulgare L. Polypodium vulgare [Osladin) Polypodoside from Polypodium glycyrrhiza