in L. Abrams and R. S. Ferris, Illustrated Flora of the Pacific States 1: 367, fig. 900. 1923.
Herbs, perennial, rhizomatous, 2.6–6.5 dm. Rhizomes 1.5–3.5 mm diam. Culms erect, 1.5–3 mm diam. Cataphylls 2, chestnut brown, apex acute. Leaves: basal 2, cauline 1–2, light green; auricles absent; blade 2.5–20.5 cm × 2–3 mm. Inflorescences panicles of 10–50 heads, 4–10 cm, ascending to erect branches; primary bract erect; heads 3–22-flowered, obovoid to hemispheric, 5–11 mm diam. Flowers: tepals dark brown to purplish brown, lanceolate, 3–4 mm, nearly equal; outer tepals acuminate, mucro subulate; inner tepals acuminate or cuspidate, mucro subulate; stamens 6, anthers 2.5–3 times filament length. Capsules included, chestnut brown, 1-locular, oblong, 2.3–3.2 xx–xx mm (including beak), apex acuminate proximal to beak, beak slightly exserted. Seeds obovoid, 0.5–0.6 mm, not tailed.
Phenology: Fruiting summer.
Habitat: Wet places, montane conifer forests
Elevation: 1700–2900 m