Changes

*Shrubby perennial, much branched from the base, up to 1.5(–2.5) m tall, all parts with latex, branches erect, densely hairy when young, woody at base, with taproot.  *Leaves opposite, simple and entire; petiole 1–10 mm long; blade linear to narrowly linear-elliptical, (2.5–)4–12 cm × (0.2–)0.3–0.8(–1.3) cm, base cuneate, apex attenuate, mucronate, yellowish-green, sparsely to densely hairy with soft white hairs on veins.  *Inflorescences an extra-axillary nodding umbel, 4–7(–12)-flowered; peduncle 1.5–3(–4) cm long; bracts filiform, deciduous.  *Flowers bisexual, regular, 5-merous; pedicel 1–2.5 cm long; sepals lanceolate or triangular, 2–5 mm long, attenuate; corolla reflexed, white, yellowish or pink, lobes ovate, 5–8 mm × 3–5 mm, acute, margins ciliate; corona lobes attached 1–1.5 mm above base of staminal column, laterally compressed, 2–4 mm × 1.5–3 mm, as tall as the column, upper margins entire, proximal margins a pair of falcate teeth c. 1–1.5 mm long, pointing back along the upper margins of the lobe or curved down into the cavity; anther wings 1.5–2 mm long; ovary superior, carpels 2, free, stigma head flat.  *Fruit a pair of upright follicles, each follicle ovoid, 4–7 cm × 1.5–2.5 cm, tapering gradually or abruptly into a long beak, strongly or weakly inflated, balloon-like, papery, pale green, sometimes tinged reddish, short-hairy, with or without soft spiny processes, many-seeded.  *Seeds ovate with one convex and one concave face, 3.5–5 mm × c. 2 mm, warted, brownish grey, coma 2.5–3 cm long.