Slender shrub 1-2.5(-3) m tall, rootstock not seen; stems erect, much branched from base, slender, glabrous except in the inflorescence, usually with a pale waxy bloom. Leaves paired, present only on recent shoots; sessile; lamina 4-12 x 0.1(0.2) cm, narrowly linear, apex acute, margins smooth, strongly revolute, glabrous. Inflorescences extra-axillary with 6-12 flowers in a nodding umbel; peduncles 0.5-2 cm long, slender, glabrous or pubescent; bracts filiform, shortly tomentose, deciduous; pedicels 1-1.5(-2.5) cm long, filiform, pubescent or more usually shortly tomentose. Sepals 1.5-2.5 x 0.5-1.3 mm, ovate to triangular, acute, pubescent to shortly tomentose. Corolla strongly reflexed, exposed face yellow-green to creamy white, sometimes apparently tinged with pink on other surface, subglabrous to sparsely tomentose outside, glabrous or minutely papillose within; lobes 3.5-5 x 1.5-2.5 mm, ovate to oblong, subacute. Corona lobes attached 0.5-1 mm above base of staminal column, somewhat compressed laterally, complicate, 2-3.5 x 1-2 mm, slightly taller than the column, quadrate, the upper margin entire and level or sloping gently upwards from the proximal angles, rounded distally, with a slender, laterally flattened tooth arising within the cavity and reaching the upper margin or exceeding it by up to 1 mm, greenish yellow or cream. Anther wings 1.1-1.3 mm long, triangular. Corpusculum c.0.3 x 0.1 mm, subcylindrical, brown; translator arms c.0.2 mm long, flattened, geniculate; pollinia c.0.7 x 0.25 mm, flattened, oblanceolate in outline. Stigma head flat. Fruiting pedicel ± straight; follicles 2-3 x c.0.6 cm, lanceolate in outline, tapering gradually or abruptly into an attenuate beak, pubescent to tomentose when young, ± glabrous at maturity, smooth. Seeds 5-6 x c.2.5 mm, flattened, ovate, with a coma of silky hairs c.7 mm long.
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Shrub, up to 2 m tall, stems erect, branching from base, slender, grey with waxy layer, tomentose on younger parts, sap milky. Leaves filiform, 40-100 x 1-1.5 mm, usually weeping. Flowers 4-9, in extra-axillary clusters, pedicels ± 12 mm long. Corolla yellow. Corona white above, green towards base, seated on short stipe, with apex slightly produced, with a laterally flattened horn projecting from cavity. Fruit wax-covered, with few hairs, 20-30 x 5-7 mm, beaked. Whenever rain falls.
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