Triangular Club-rush
CR

Triangular Club-rush

Schoenoplectus triqueter

UnknownLCEULCEU

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Schoenoplectus_triqueter

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Triangular Club-rush faces severe threats from habitat loss due to coastal development, wetland drainage, and sea-level rise affecting its specialized estuarine environments. The species' restricted distribution and dependence on specific tidal conditions make remaining populations extremely vulnerable to environmental changes and human disturbance.

Threat summary

Habitat

Triangular Club-rush occurs in brackish and saltwater marshes, estuarine mudflats, and tidal riverbanks where fresh and salt water mix. The species typically grows in shallow water or saturated soils along coastlines and in lower reaches of rivers subject to tidal influence.

TERRESTRIAL· major

Other threatened species in Cyperaceae

Round-headed Club-rushCR

Round-headed Club-rush

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Unknown
Tawny SedgeCR

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Two-stamen SedgeCR

Two-stamen Sedge

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Flat-sedgeVU

Flat-sedge

Blysmus compressus

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Frequently asked questions

Why is Triangular Club-rush classified as Critically Endangered?
Triangular Club-rush is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Triangular Club-rush faces severe threats from habitat loss due to coastal development, wetland drainage, and sea-level rise affecting its specialized estuarine environments. The species' restricted distribution and dependence on specific tidal conditions make remaining populations extremely vulnerable to environmental changes and human disturbance.
Where does Triangular Club-rush live?
Triangular Club-rush occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Triangular Club-rush?
The main threats to Triangular Club-rush are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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