Frutex, slender, erect, 70 cm to 3 m high, branches rather slender, new growth pubescent to velvety tomentose with minute fringed scales and stellate hairs, glabrescent. Stipules leaf-like, elliptic-cuneate to oblanceolate-elliptic, 3-20 mm long, 1-6 mm broad, sessile or shortly petioled, velvety tomentose on both surfaces, mucronate. Leaves petiolate; blade broadly to narrowly oblong-elliptic, or oblanceolate-elliptic, 5-50 mm long, 2.5-20 mm broad, velvety tomentose on both surfaces, mucronate, often folded along midrib, midrib impressed above, prominent beneath; petiole 2-10 mm long, Inflorescence of short, paniculate cymes terminal on branchlets and in axils of upper leaves, 2.5-6 cm long; bracts early caducous, terete, up to 9 mm long, tomentose; pedicels short, 2-6 mm long. Calyx campanulate, 5-7 mm long, lobed to middle or beyond, pubescent with scale-or tubercle-based hairs, drying thin. Petals usually only slightly longer than calyx, from about 6 to 8 mm long, oblong to suborbicular in upper third, narrowed to a ciliate waist and produced in lower third into a claw with broadly infolded margins. Stamens about 5 mm long, filaments hyaline, obovate, obscurely pubescent on shoulder, anthers about 3 mm long, ciliate, overlapping filaments at base. Ovary finely pubescent with longer hairs at the apex, 5-angled and 5-umbonate at apex; stipe small, up to 0.75 mm long; styles cohering, about 2.5 mm long. Capsule enclosed in persistent perianth, about 5 mm long, finely stellate-tomentose but hairs longer at apex of capsule.
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Slender, erect shrub, 0.7-3.0 m high; branches dark brown or orange; vegetative parts velvety tomentose with fringed scales and stellate hairs. Leaves glaucous, petioles visible, narrowly oblanceolate-elliptic, often folded, apex mucronate, margins entire; velvety tomentose on both surfaces. Stipules leaf-like. Inflorescences of short, leafy, paniculate cymes, terminal on branchlets; peduncles ± 5 mm long, slender; pedicels velvety tomentose. Flowers ± 8 mm long, yellow. Calyx broadly campanulate, thin-textured, 5-10-ribbed, 5-lobed to beyond middle, lobes deltate; pubescent with scale-or tubercle-based hairs. Petals ± oblong, narrowed to ciliate waist, produced into a claw. Flowering time all year. Fruit a capsule enclosed in persistent perianth.
Like H. lavandulifolia but usually more robust, to 3 m, with large, leafy stipules. Capsules umbonate.