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Knotted club-rush facts for kids

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Knotted club-rush
Ficinia nodosa.jpg
Scientific classification
  • Scirpus nodosus Rottb.
  • Isolepis nodosa (Rottb.) R.Br.

Ficinia nodosa, the knotted club-rush or knobby club-rush, is a rhizomatous perennial in the family Cyperaceae, thought to be native to Australia and New Zealand. Widespread in the Southern Hemisphere, it grows to between 15 and 220 cm in height. The plant occurs in sandy coastal areas near lakes and sea in Western Australia, South Australia, Tasmania, Victoria, New South Wales and Queensland.


Ficinia nodosa has several synonyms including the basionym for Ficinia nodosa, Scirpus nodosus. The origin of the name is unknown, although confusion about the genus of Ficinia nodosa dates beyond 1980. The original name, Scirpus nodosa, is commonly attributed to Christen Friis Rottbøll, a Danish botanist. The reassignment of nodosa to the Ficinia genus occurred in 2000, when DNA studies identified Ficinia nodosa’s woody rhizome and presence of a gynophore as evidence for the plant’s inclusion in the Ficinia genus.

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