Onychosepalum is a plant genus in the family Restionaceae, described as a genus in 1855.
The entire genus is endemic to the State of Western Australia.
Species
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Onychosepalum laxiflorum Steud.
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Onychosepalum microcarpum Meney & Pate
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Onychosepalum nodatum B.G.Briggs & L.A.S.Johnson