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

Northern Cluster Sedge, Northern Clustered Sedge

Carex arcta

Synonyms: Carex canescens ssp. polystachya, Carex canescens var. oregana, Carex heleonastes var. scabriuscula, Carex kunzei

Northern Cluster Sedge, Northern Clustered Sedge: Carex arcta (Synonyms: Carex canescens ssp. polystachya, Carex canescens var. oregana, Carex heleonastes var. scabriuscula, Carex kunzei)

A close-up of the inflorescence of northern cluster sedge as seen from wet meadows at the head of Sheep Lake several miles north of Chinook Pass, Baker-Snoqualmie National Forest..........August 25, 2014.

Perigynia of Northern Cluster Sedge, Northern Clustered Sedge: Carex arcta (Synonyms: Carex canescens ssp. polystachya, Carex canescens var. oregana, Carex heleonastes var. scabriuscula, Carex kunzei)

A close-up of the perigynia of northern cluster sedge as seen from wet meadows at the head of Sheep Lake several miles north of Chinook Pass, Baker-Snoqualmie National Forest..........August 25, 2014.

Perigynia of Alpine Nerved Sedge: Carex neurophora

Alpine nerved sedge as seen in vernally moist meadows along Trail #179 between Junction Lake and Lemei Lake, Indian Heaven Wilderness.............August 24, 2013.

Inflorescence of Alpine Nerved Sedge: Carex neurophora - Alpine Nerved Sedge: Carex neurophora

Alpine nerved sedge as seen in vernally moist meadows along Trail #179 between Junction Lake and Lemei Lake, Indian Heaven Wilderness.............August 24, 2013.

Close-up of the inflorescence of Northern Cluster Sedge, Northern Clustered Sedge: Carex arcta (Synonyms: Carex canescens ssp. polystachya, Carex canescens var. oregana, Carex heleonastes var. scabriuscula, Carex kunzei)

The photo above shows a close-up of the inflorescence of northern cluster sedge as seen in moist meadows (around the periphery of a shallow pond) along the Pacific Crest Trail about one-half mile west of its junction with the Stagman Ridge Trail #12........September 13, 2008.

Northern Cluster Sedge, Northern Clustered Sedge: Carex arcta (Synonyms: Carex canescens ssp. polystachya, Carex canescens var. oregana, Carex heleonastes var. scabriuscula, Carex kunzei)

The photo above shows northern cluster sedge as seen in moist meadows (around the periphery of a shallow pond) along the Pacific Crest Trail about one-half mile west of its junction with the Stagman Ridge Trail #12........September 13, 2008.
Perigynia of Northern Cluster Sedge, Northern Clustered Sedge: Carex arcta (Synonyms: Carex canescens ssp. polystachya, Carex canescens var. oregana, Carex heleonastes var. scabriuscula, Carex kunzei) - Perigynia of Northern Cluster Sedge, Northern Clustered Sedge: Carex arcta (Synonyms: Carex canescens ssp. polystachya, Carex canescens var. oregana, Carex heleonastes var. scabriuscula, Carex kunzei)
The 2 photos above show close-ups of the veined perigynia of northern cluster sedge as seen in moist meadows (around the periphery of a shallow pond) along the Pacific Crest Trail about one-half mile west of its junction with the Stagman Ridge Trail #12..........September 13, 2008. The perigynia bear a resemblance to those of veined sedge (Carex neurophora) which has a more compact inflorescence.
Paul Slichter