Buckley, Proc. Acad. Nat. Sci. Philadelphia 1862: 8 (1862)
Perennials, 15–30 (–35) cm tall, densely to loosely caespitose; rhizome short, ±vertical to ascending; stem ±compressed, often with bulbous swollen base. Cataphyll 0–1, brownish; basal leaves 1–4; cauline leaves 1–3, flat, c. 3–12 cm long, 1.0–2.5 mm wide; auricles obtuse, scarious, rarely brownish at base, c. 0.3–0.8 mm long. Lower bract narrow, to 2.5 cm long, shorter than inflorescence; margins ±smooth. Inflorescence decompound, usually umbelloid, of (1–) 2–5 (7–10) globose to hemispherical (3–) 6–10 (–15)-flowered heads 7–10 mm wide. Tepals lanceolate to ovate-lanceolate, subequal, c. 3.8–4.8 mm long, acuminate, with central band ±smooth, green to greenish-stramineous, with a prominent mid-vein (carinate) in outer ones; margins membranous to stramineous, broad. Stamens 3; anthers 0.4–0.7 mm long; filaments to c. 1.5 mm long; style c. 0.4–0.5 mm long including young capsule mucro; stigmas 0.8–1 mm long. Capsule trilocular, oblong-obovoid, obtuse to truncate, c. 2.8–3.3 mm long, with a mucro 0.3–0.4 mm long, pale (tan) brown to slightly reddish-brown, ±shorter than perianth. Seeds ±ellipsoid, apiculate, 0.4–0.6 × c. 0.2 mm, light brown, distinctly reticulate; appendages absent. 2n = 40, fide N.A.Harriman, Taxon 28: 406 (1979).