Shrub or treelet,½-2½ m, branchlets 4-lined and flattened when young, becoming terete. Leaves subsessile or up to 7 mm petiolate, 23½-8 by 1-3¾ cm, lanceolate to narrowly ovate or rarely ovate, apex acute to rounded-apiculate, base broadly cuneate to rounded, margin often reflexed, glaucous beneath; 4 main lateral veins, with lax reticulate venation; glands all pale, shortly striate and punctate. Inflorescence 1-3(-10, rarely up to 18)-flowered, terminal (1-2 nodes), corymbose. Flowers (3½-)4-7 cm Ø, flat or slightly concave; buds ± broadly ovoid, acute or subacute. Sepals 7-20 by 2-8 mm, free, imbricate, narrowly oblong or narrowly elliptic or rarely ovate to oblanceolate, very acute to subacute, entire, midrib sometimes visible below and sometimes incrassate above; spreading or recurved in flower and fruit; glands all pale, linear. Petals deep golden yellow, (2-)2½-4½ by VA-3 cm, broadly obovate to obovate-circular, entire, deciduous; apiculus ± distinct, acute to obtuse; glands all pale, linear. Stamen fascicles 5, 9-12 mm long, c. ⅓ as long as petals, each with c. 80 stamens, caducous; anthers yellow, gland amber. Ovary 6-9 mm, ovoid or ± narrowly ovoid-conic to narrowly ellipsoid, acuminate; styles 5, 3½-7 mm, about half as long as ovary, erect or suberect, outcurved near apex, free; stigma small; placentas 5, axile, with central lacuna. Capsule 1-2 cm, narrowly ellipsoid or narrowly ovoid-conic. Seeds dark orange-brown to reddish-brown, 0.8-1 mm, cylindric, sometimes curved, scarcely carinate, shallowly and minutely linear-foveolate to reticulate.
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