Hypericum lissophloeus W.P.Adams

Shrub to 4 m tall, erect, slender, sparsely branched, forming dense clumps sometimes with prop-roots, with branches suberect to ascending. Stems silvery-brown (gun-metal colour), light reddish brown beneath, 4- lined, ancipitous and glaucous when young, soon 4-angled, eventually terete; cortex exfoliating in large thin curled plates; bark chestnut-brown, smooth, thin, polished, becoming metallic-silvery. Leaves sessile, (9-) 12- 17 x 0.5-0.75 mm, with those in axillary clusters almost as long, linear-subulate to acicular, incurved, with revolute margin not wholly obscuring papillose lower surface, glaucous when young, subcoriaceous, deciduous at basal articulation, apex obtuse to rounded, base not or scarcely expanded; midrib unbranched; laminar glands numerous, especially visible beneath, marginal glands dense. Inflorescence 1-3-flowered, usually with paired flowers or triads from up to 9 nodes below, the whole very narrowly cylindric; pedicels 2-3 mm long; bracts foliar. Flowers c. 20 mm in diam.; buds ovoid, acute. Sepals 5, 7-8 x 0.5-0.75 mm, subequal, linear-subulate, acute, 1-veined, deciduous. Petals 5, bright yellow, spreading?, 10-12 x 5-6 mm, obovate-spathulate, with apiculus lateral, acute, rather short. Stamens 170-221, longest 8-9 mm, 0.75-0.8 x petals. Ovary 3(4)-merous, c. 3.5 x 1.2 mm, narrowly ellipsoid, placentation parietal; styles 3(4), c. 5 mm long, c. 1.4 x ovary, separating in fruit. Capsule 6-7 x 2.5-3.5 mm, narrowly ovoid to ellipsoid, shorter than sepals, thinly coriaceous. Seeds tan to dark brown, 1-1.6 mm long, shallowly carinate; testa very coarsely reticulate-sulcate.