Caustis is a genus of rhizomatous flowering plants in the sedge family.
Species The species, all endemic to Australia, are as follows:
Caustis blakei Kuk. Caustis deserti R.L.Barrett Caustis dioica R.Br. Caustis flexuosa R.Br. - Curly Wig Caustis gigas R.L.Barrett Caustis pentandra R.Br. -Thick Twist Rush Caustis recurvata Spreng. Caustis restiacea Benth.
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