[Sedges: The Genus Carex West of the Cascade Mountains of Oregon and Washington]

Chamisso Sedge, Starry Sedge, Thick-head Sedge, Thick-headed Sedge

Carex pachystachya

Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri

Chamisso Sedge, Starry Sedge, Thick-head Sedge, Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri) - Chamisso Sedge, Starry Sedge, Thick-head Sedge, Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri)

Chamisso Sedge, Starry Sedge, Thick-head Sedge, Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri) - Chamisso Sedge, Starry Sedge, Thick-head Sedge, Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri)

What appears to be thick-head sedge observed at the Grouse Gap shelter, Siskiyou Crest, Klamath National Forest.......July 22, 2021. If not thick-headed sedge, then this would most likely be Carex multicostata.

Inflorescence of Chamisso Sedge, Starry Sedge, Thick-head Sedge, Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri)

Close-up of the inflorescence of thick-headed sedge as seen at Steptoe Butte State Park in eastern Washington.......June 22, 2009.

Perigynia of Chamisso Sedge, Starry Sedge, Thick-head Sedge, Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri)

Close-up of several of the perigynia of thick-headed sedge as seen at Steptoe Butte State Park in eastern Washington......June 22, 2009.

Scale and perigynia of Chamisso Sedge, Starry Sedge, Thick-head Sedge, Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri)

Close-up of a narrow scale and perigynia of thick-headed sedge as seen at Steptoe Butte State Park in eastern Washington.......June 22, 2009.

Inflorescence of Chamisso Sedge, Starry Sedge, Thick-head Sedge, Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri) - -Perigynia and scales of Chamisso Sedge, Starry Sedge, Thick-head Sedge, Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri) - Inflorescence of Chamisso Sedge, Starry Sedge, Thick-head Sedge, Thick-headed Sedge: Carex pachystachya (Synonyms: Carex festiva var. gracilis, Carex festiva var. pachystachya, Carex macloviana, Carex macloviana ssp. pachystachya, Carex macloviana var. pachystachya, Carex pachystachya var. gracilis, Carex pachystachya var. monds-coulteri)

Close-ups of the crowded inflorescence as well as several bracts and perigynia of thick-headed sedge as seen along a small stream at the trailhead to Canyon Creek in the Klickitat State Wildlife Area of south-central Washington........June 12, 2009.
Paul Slichter