Onychium SynonymySource: Christenhusz, M. & Raab-Straube, E. von (2013+): Polypodiopsida. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.Onychium Kaulf. in Berlin. Jahrb. Pharm. Verbundenen Wiss. 21: 45. 1820ContentDistribution Distribution Eg [Az(F M P)] Euro+Med: Azores introduced (Faial introduced, Pico introduced, São Miguel introduced); Egypt native