Hypericum choisianum Wall. ex N. Robson

Shrub (0.3-)1-2 m tall, bushy, with branches erect to ascending. Stems red to orange, 4-lined and ancipitous when young, eventually terete; internodes 15-55 mm long, usually shorter than leaves; bark grey-brown. Leaves petiolate, with petiole 2-4 mm long; lamina 25-88 x 10-42 mm, triangular-lanceolate or rarely triangular-ovate to ovate, acute or acuminate to obtuse or rarely rounded, margin plane, base broadly cuneate to rounded or subcordate, paler beneath, not glaucous, chartaceous; venation: 3-5 pairs main laterals, branched, the lower pairs sometimes free, the midrib branches impressed, with tertiary reticulum almost invisible to marked and rather dense; laminar glands streaks and dots; ventral glands absent. Inflorescence 1-7-flowered, from terminal node, subcorymbiform; pedicels 3.5-11 mm long; bracts foliar to narrowly elliptic, persistent. Flowers 40-70 mm in diam., shallowly to deeply cyathiform; buds ovoid, sharply acute to obtuse. Sepals 7-18 (or longer if markedly foliaceous) x 2-10 mm, free, imbricate or open, unequal, spreading to recurved in bud and fruit, narrowly to very broadly elliptic, acute to apiculate or more rarely obtuse, with margin entire; midrib clearly visible, veins not usually prominent; laminar glands linear, interrupted towards apex, numerous. Petals deep golden yellow, sometimes tinged red dorsally, slightly to markedly incurved, 16-30 x 15-22 mm, 1.7-2.2 x sepals, broadly obovate to obovate-circular, with apiculus subterminal, rounded, margin entire, eglandular. Stamen fascicles each with 60-80 stamens, longest 6-10 mm long, 0.35-0.4 x petals; anthers golden yellow. Ovary (5)6-8(9) x 3.5-5.5 mm, ± broadly ovoid; styles 3-5 mm long, 0.5-0.7 x ovary, free, outcurved near apex; stigmas narrowly capitate. Capsule (9-)14-19 x 8-12 mm, ovoid-conic to subglobose. Seeds dark brown, 0.7-1 mm long, cylindric to cylindric-ellipsoid, carinate or shallowly winged, shallowly linear-reticulate to linear-foveolate.