S.Watson, Proc. Amer. Acad. Arts , n.s., 6: 302 (1879)
Perennials (10–) 15–25 (30) cm tall, densely caespitose, pale green, subglabrous; rhizome short, ±ascending, subnodulose; stolons absent. Basal leaves to 20 cm long, 4–6 mm wide; cauline leaves 2–3, 3–5 mm wide. All leaves with papillose-serrulate margins; tip acute. Lower bract c. 1.0–2.5 cm long, purplish-stramineous to subherbaceous, much shorter than inflorescence. Inflorescence many-flowered, lax, c. 7–10 cm in diam., with rigidly divaricate branches (often at ±right angles); flowers borne singly; distal peduncles usually more than 1.0–1.5 cm long. Bracteoles ovate-lanceolate, membranous; base often pale brownish, c. 1.1–1.4 mm long, subglabrous. Tepals equal, glabrous, stramineous to pale brown, often with reddish tinge, ±lanceolate, long-acuminate, (1.8–) 2.0–2.2 (–2.4) mm long; apex often ±reflexed. Stamens 6; anthers 0.4–0.6 mm long; filaments c. 0.4–0.5 mm long; style 0.2–0.4 mm long; stigmas 0.7–1.5 mm long. Capsule ±oblong, usually pale brown, acute, exceeding perianth; capsule segments 1.9–2.2 × 1.0–1.2 mm long. Seeds brown, 1.0–1.2 mm long, c. 0.6 mm wide; appendage indistinct, to 0.1 mm, fibrillate.