Shrub 0-3-1-5 m tall, bushy, with branches ± erect. Stems red to orange, 4-angled and slightly ancipitous when young, soon terete; internodes 10-45(-60) mm long, shorter than or rarely exceeding leaves; bark grey-brown, smooth, fissuring. Leaves petiolate, with petiole 0-5-2 mm long, ± broad; lamina 20-53(-60) x 9-32(-35) mm, lanceolate or triangular-ovate to ± broadly ovate, obtuse to rounded or slightly retuse, margin plane, base broadly cuneate to rounded, paler beneath, chartaceous; venation: 4-5 pairs main laterals, forming undulating intramarginal vein with midrib branches, with obscure or invisible tertiary reticulum; laminar glands short streaks and dots; ventral glands dense, especially near midrib. Inflorescence 1-c. 20-flowered, from 1 or occasionally 2 nodes, subcorymbiform, pedicels 4-10 mm long; bracts lanceolate to ± foliaceous, persistent. Flowers (25-)35-60 mm in diam., ± deeply cyathiform; buds broadly ovoid, obtuse to rounded. Sepals 6-9 x 3-8 mm, free, imbricate, subequal to equal, erect in bud and fruit, ovate or ± broadly elliptic to subcircular, rounded or rarely subapiculate, with margin entire or finely eroded- denticulate towards apex and often ± hyaline; midrib distinct, veins not prominent; laminar glands linear, ± interrupted distally, 12 or more. Petals golden yellow, not tinged red, markedly incurved, 18-30 x 11-25 mm, 3-3.5 x sepals, broadly obovate, with apiculus subterminal, rounded; margin entire (?) or remotely glandular- subdenticulate. Stamen fascicles each with 40-65 stamens, longest 10-15 mm long, 0.4-0.6 x petals; anthers golden yellow. Ovary (4.5-)6-8 x 4-4.5 mm, broadly ovoid; styles 4-7 mm long, 0.7-0.9(-l) x ovary, free, outcurved near apex; stigmas small. Capsule 12-18 x 8-14 mm, ± broadly ovoid. Seeds dark reddish-brown, 1.2-1.7 mm long, narrowly cylindric, distally slightly carinate or winged, very shallowly scalariform-reticulate.