Onychium is a genus of ferns in the subfamily Pteridoideae of the family Pteridaceae.

[2] As of December 2019[update], the Checklist of Ferns and Lycophytes of the World recognized the following species and hybrids:[3] O. siliculosum (Desv.)

O. tenuifrons Ching O. cryptogrammoides Christ O. plumosum Ching O. lucidum (D.Don) Spreng.

Kunze (Japanese claw fern, carrot fern) O. moupinense Ching Other species: This Pteridaceae-related article is a stub.

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