Shrub 1.5-2 m tall, spreading to 2.5 m wide, with branches arching to spreading. Stem yellow-brown, 4-angled but not ancipitous when young, soon terete; internodes 10-50 mm long, shorter than leaves. Leaves petiolate, with petiole 1-2.5 mm long; lamina (20-)25-85 x 10-40 mm, elliptic-oblong to ovate-lanceolate or oblong- lanceolate, apiculate or obtuse to rounded, margin plane, base truncate to rounded, paler beneath, not glaucous, chartaceous; venation: 3-4(5) pairs main laterals, all or only distal ones closed, with subsidiaries rarely prominent and tertiary reticulum not visible; laminar glands dots and short streaks; ventral glands absent or rarely sparse. Inflorescence l-3(-5)-flowered from apical node; pedicels 2-10 mm long; bracts reduced, lanceolate, persistent. Flowers (30-)50-65 mm in diam., shallowly cyathiform; buds ovoid, obtuse. Sepals 7-10 x 4.5-6.2 mm, free, imbricate, subqual, erect in bud and fruit, ovate to oblong-ovate or oblong-spathulate, acute or apiculate to obtuse or rounded-apiculate, margin entire or minutely denticulate, sometimes narrowly hyaline; midrib distinct, veins becoming prominent after flowering; laminar glands linear or interrupted, numerous. Petals golden yellow, shallowly incurved, (20-)25-32 x (12-)15-32 mm, 3-4 x sepals, broadly obovate to subcircular, with apiculus lateral rounded; margin entire. Stamen fascicles each with 40-45 stamens, longest 12-15 mm long, c. 0-4 x petals; anthers yellow. Ovary 5-7 x 3-5 mm, ovoid; styles 4.5-5(-7) mm, 0.7-0.8(-l) x ovary, free, suberect, outcurving near apex; stigmas scarcely capitate. Capsule c. 20 x 10-12 mm, ovoid to cylindric- ovoid. Seeds dark reddish-brown, 1-1.2 mm long, cylindric, not or scarcely carinate, shallowly linear- reticulate.