Shrubs, erect, much-branched distally, bushy, not treelike, usually forming mounds, to 15(–30) dm, <bark thick, smooth, thin-corky and spongy, exfoliating in thin, papery sheets or plates>. Stems: internodes 6-lined at first, soon 2-winged, then terete, <not glaucous>. Leaf blades linear-subulate, 8–20 × 0.7–1 mm, <not glaucous>, base articulated, parallel, margins revolute, apex sometimes slightly broadened, midrib unbranched. Inflorescences <rounded-pyramidal to corymbiform, sometimes intercalary as result of resumed vegetative growth>, (3–)7–32-flowered, sometimes with single flowers or 3–5-flowered dichasia from to 3 proximal nodes. Flowers 13–16 mm diam.; sepals deciduous, not enclosing capsule, 5, linear-subulate, unequal, (3–)4.5–8(–10) × 0.5 mm, <not glaucous>; petals 5, bright yellow, obovate-spatulate, 6–9 mm; stamens deciduous, 70–100; ovary 3-merous; <styles 2.5–4 mm>. Capsules ± narrowly ovoid-conic to ovoid-ellipsoid, 5.5 × 2.5–3 mm. Seeds not carinate, 0.4 mm; testa finely foveolate-reticulate. 2n = 18.
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