Lesser Tussock-sedge
CR

Lesser Tussock-sedge

Carex diandra

Unknown

Photo: Photo: Wikimedia Commons, CC BY-SA

Overview

Carex diandra is a species of sedge known by the common names lesser tussock-sedge and lesser panicled sedge.

Two-stamen Sedge faces severe population declines due to widespread wetland habitat destruction and degradation across its range. Climate change and altered hydrology from human activities have further reduced suitable habitat, while agricultural conversion and urban development continue to eliminate remaining populations.

Threat summary

Habitat

Two-stamen Sedge occurs in calcareous fens, wet meadows, marshes, and other alkaline wetland habitats, typically in areas with consistent moisture and mineral-rich soils. The species requires specific hydrological conditions and is often found in transitional zones between aquatic and terrestrial environments.

TERRESTRIAL· major

Other threatened species in Cyperaceae

Round-headed Club-rushCR

Round-headed Club-rush

Scirpoides holoschoenus

Unknown
Tawny SedgeCR

Tawny Sedge

Carex hostiana

Unknown
Carex pallidulaVU

Carex pallidula

Unknown
Tufted ClubrushVU

Tufted Clubrush

Trichophorum cespitosum

Unknown

Frequently asked questions

Why is Lesser Tussock-sedge classified as Critically Endangered?
Lesser Tussock-sedge 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. Two-stamen Sedge faces severe population declines due to widespread wetland habitat destruction and degradation across its range. Climate change and altered hydrology from human activities have further reduced suitable habitat, while agricultural conversion and urban development continue to eliminate remaining populations.
Where does Lesser Tussock-sedge live?
Lesser Tussock-sedge 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 Lesser Tussock-sedge?
The main threats to Lesser Tussock-sedge 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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