Round-headed Club-rush
CR

Round-headed Club-rush

Scirpoides holoschoenus

Unknown

Photo: Photo: Wikimedia Commons, CC BY-SA

Overview

Scirpoides holoschoenus is a species of perennial sedge in the family Cyperaceae, commonly called the roundhead bulrush. It has a self-supporting growth form and simple, broad leaves. They are associated with freshwater habitat. Individuals can grow to 0.75 m.

Round-headed Club-rush faces severe threats from wetland habitat destruction and degradation due to agricultural conversion, urban development, and water management practices that alter natural hydrological regimes. Climate change-induced shifts in precipitation patterns and increased frequency of extreme weather events further threaten the specialized wetland ecosystems this species depends upon.

Threat summary

Habitat

Occupies freshwater and brackish wetlands including marshes, pond margins, ditches, and seasonally flooded areas, typically in Mediterranean and temperate regions with fluctuating water levels. Also found in coastal salt marshes and alkaline wetlands where water salinity varies seasonally.

TERRESTRIAL· major

Other threatened species in Cyperaceae

Tawny SedgeCR

Tawny Sedge

Carex hostiana

Unknown
Carex pallidulaVU

Carex pallidula

Unknown
Tufted ClubrushVU

Tufted Clubrush

Trichophorum cespitosum

Unknown
saltmarsh flat-sedgeVU

saltmarsh flat-sedge

Blysmus rufus

Unknown

Frequently asked questions

Why is Round-headed Club-rush classified as Critically Endangered?
Round-headed 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. Round-headed Club-rush faces severe threats from wetland habitat destruction and degradation due to agricultural conversion, urban development, and water management practices that alter natural hydrological regimes. Climate change-induced shifts in precipitation patterns and increased frequency of extreme weather events further threaten the specialized wetland ecosystems this species depends upon.
Where does Round-headed Club-rush live?
Round-headed 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 Round-headed Club-rush?
The main threats to Round-headed 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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