Perennial herb 0.1–0.3(–0.4) m tall, erect to ascending, sometimes rooting, with stems few to several, unbranched below inflorescence, but usually branched at base. Stems narrowly and incompletely 2-lined, eglandular, not glaucous; internodes 10–45 mm, equalling or usually exceeding leaves. Leaves sessile or rarely subsessile, not amplexicaul, erect to ascending or rarely spreading; lamina 8–30 × 2–10 mm, lanceolate to linear-oblong or linear, pale beneath, chartaceous; apex subacute, margin recurved to plane or revolute, entire, base rounded to (usually broadly) cuneate; venation: 3 pairs of main laterals from lower ⅓ to 2/5 of midrib, sometimes branched, without or with obscure visible tertiary reticulation; laminar glands pale and sometimes black, scattered, sparse to rather dense; marginal glands black, irregular. Inflorescence 3–c. 35-flowered, from 1–3 nodes, without flowering branches below, the whole obconic to broadly pyramidal; pedicels 1–4 mm; bracts and bracteoles reduced-foliar to narrowly lanceolate, the upper glandular-ciliate and -auriculate. Flowers (10–)15–25 mm in diam., stellate; buds cylindric-ellipsoid to broadly ellipsoid, rounded. Sepals 5, equal, almost free, 3.5–6 × 1.5–3 mm, lanceolate, acute, margin eglandular-fimbriate; veins 3–5,branching, slightly prominent; laminar glands black, linear to punctiform; marginal glands absent. Petals 5, bright? yellow, sometimes tinged or veined red dorsally, 10–14 × 3.5–6 mm, oblong-lanceolate to elliptic, rounded; laminar glands black, punctiform scattered; marginal glands black, irregularly spaced, sessile. Stamens 60–80, longest 6–10 mm, 0.6–0.7 × petals. Ovary 2.5–3 × 1.5–2 mm, pyramidal-ovoid to ellipsoid;styles 5–6 mm, 2 × ovary. Capsule 5–9 × 3.5–7 mm, ovoid to pyramidal-ovoid; valves with ± prominent rounded amber vesicles. Seeds stramineous, 1–1.2 mm; testa ribbed.