Plants 6–30(–40) cm, perennial. Taproot slender. Stems numerous, caespitose, decumbent, slender, branching at base, yellow or tinged pink, base without fibrous remnant sheaths. Leaves sessile; blades linear, 1–6 × 0.2–0.6 cm, 7–11-nerved, gray-green, base slightly dilated, almost clasping, apex acuminate. Middle leaves shorter and broader, lanceolate, thinly 15–19-nerved. Umbels 1–3 cm across; bracts 3–4, ovate or elliptic, 4–9 × 2–4 mm, unequal; rays 3, 0.5–2 cm, rather thick, unequal; bracteoles (1–)3–5, ovate or lanceolate, 1.5–5 × 0.7–2.5 mm, very unequal; umbellules ca. 5 mm across, 3–6(–9)-flowered, only 2–3 flowers develop into fruit; pedicels ca. 1 mm. Petals yellow or dark purple. Stylopodium low-conic, dark yellow or purplish. Fruit ellipsoid or long-ovoid, brown, 3.5–4.5 × 2–2.3 mm, apex slightly narrow; ribs pale yellow, rounded; vittae 4–5 in each furrow, 4 on commissure. Fl. and Fr. Jul–Sep.
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