Stems strigose, medifixed hairs to 0.5 mm; internodes 1–2 cm, short-shoot spurs to 7 mm, 1 mm thick. Leaves: 0.4–1(–1.2) mm, base clasping; stipules acute, free portion 0.2–0.5 mm; blade 3-angled in cross section, 0.6–1.4 mm wide, abaxially 5-ribbed, apex acute, surfaces strigose. Flowers: sepals ovate to broadly ovate or obovate, concave-convex, 5–7 mm, outer pair acuminate, inner cuspidate, abaxially red-green, strigose, adaxially yellow to orange-yellow, glabrous; petals, if present, 5–8 mm; stamens borne between sepals and on proximal 1/2 of torus sheath, filaments yellow, 5–8 mm; torus sheath light yellow, tubular, narrowly obconic, 4–6(–9) mm, thick-membranous, exterior glabrous, interior long-sericeous proximally, hair tips slightly protruding from orifice of sheath; styles 5–6 mm, slender, stigmas 3–5 mm. Achenes red-brown. 2n = 16.
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