Carex pachystachya is a species of sedge known by the common name Chamisso sedge.

Chamisso sedge
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Genus: Carex
Subgenus: Carex subg. Vignea
Section: Carex sect. Ovales
Species:
C. pachystachya
Binomial name
Carex pachystachya
Synonyms

Carex multimoda
Carex pyrophila

It is native to western North America from Alaska to Saskatchewan to California. It grows in dry to wet areas in many types of forest and grassland habitat.

Description

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Carex pachystachya produces dense clumps of erect stems up to 1.2 metres (3.9 ft) in maximum height.

The inflorescence is a dense or open cluster of several spikes of flowers. The pistillate flowers are covered in reddish or brown bracts.

The fruit is coated in a sac called a perigynium which is brown or coppery with a metallic sheen and a long dark tip.

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