[Sedges: The Genus Carex in Mt. Adams Country]

Northern Cluster Sedge, Northern Clustered Sedge

Carex arcta

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

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) - 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 at left 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. The photo at right 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.

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)

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)

Northern cluster sedge observed in TakhTakh Meadows, Gifford Pinchot National Forest........August 6, 2022.

Paul Slichter