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

Cloud Sedge, Hayden's Sedge

Carex haydeniana

Synonyms: Carex festiva var. decumbens, Carex haydenii, Carex macloviana ssp. haydeniana, Carex nubicola 

Cloud Sedge, Hayden's Sedge: Carex haydeniana (Synonyms: Carex festiva var. decumbens, Carex haydenii, Carex macloviana ssp. haydeniana, Carex nubicola)

Hayden's sedge as seen at about 9400' along the summit ridge about one-half mile north of the Steens Mountain summit, Harney County, Oregon.........September 1, 2011.

Perigynia of Cloud Sedge, Hayden's Sedge: Carex haydeniana (Synonyms: Carex festiva var. decumbens, Carex haydenii, Carex macloviana ssp. haydeniana, Carex nubicola) - Inflorescence of Cloud Sedge, Hayden's Sedge: Carex haydeniana (Synonyms: Carex festiva var. decumbens, Carex haydenii, Carex macloviana ssp. haydeniana, Carex nubicola) - Inflorescence of Cloud Sedge, Hayden's Sedge: Carex haydeniana (Synonyms: Carex festiva var. decumbens, Carex haydenii, Carex macloviana ssp. haydeniana, Carex nubicola)

Cloud Sedge, Hayden's Sedge: Carex haydeniana (Synonyms: Carex festiva var. decumbens, Carex haydenii, Carex macloviana ssp. haydeniana, Carex nubicola)

Additional close-up photos of Hayden's sedge as seen at about 9400' along the summit ridge about one-half mile north of the Steens Mountain summit, Harney County, Oregon.........September 1, 2011. Note the perigynia which are at the upper limit of length for Carex microptera and at the lower limit for Carex haydenii. Plants at this location are about 30-40 cm high.
Paul Slichter