Shrub or tree to 37 m tall and 106 cm dbh, buttresses present or absent. Bark smooth to rough and flaky, grey, greyish brown or cream-brown; inner bark white, cream or pale brown. Branchlets glabrous, sparsely lenticellate with age. Leaves: petiole 3-7 mm long; blade subcoriaceous, elliptic, ovate or obovate, 3.1-17.3 by 1.4-7.5 cm, 1.3-4.1 times as long as wide, apex acuminate, base cuneate to obtuse, glabrous, 4-10 pairs of secondary veins, strongly ascending, curved, tertiary venation mostly paler than lamina in dried specimens, almost perpendicular to midrib and oblique to secondary veins and also reticulate. Inflorescence 1.8-10 cm long; peduncle 1-1.6 cm long, glabrous to sparsely puberulent; pedicels 8-19 mm long, delicate, glabrous or puberulent. Sepals ovate, 0.7-2.5 by 0.8-2.3 mm, 0.9-1.2 times as long as wide, apex obtuse to rounded, glabrous to densely puberulent, ciliate; colleters wide and large. Corolla white, pale yellowish white to yellow-orange; subrotate; tube 1.1-3 mm long, 1.5-1.7 times as long as sepals, 0.2-0.4 times as long as lobes, glabrous or minutely puberulent at top of tube outside, glabrous inside; lobes 6.1-14 by 2.6-5.2 mm, 1.6-2.8 times as long as wide, elliptic to slightly obovate, apex rounded, minutely puberulent outside and inside; corona of antipetalous, alternipetalous and alternate lobes; antipetalous lobes adnate to the corolla at base, fimbriate, 2.8-9.4 mm long, 0.9-1.8 times as long as alternipetalous lobes, glabrous; alternipetalous lobes free, simple, deeply bifid or sometimes compound, 2.4-6.5 mm long; alternating lobes 0.6-5.8 mm long, simple, shorter than the other 2 whorls. Stamens inserted at 0.8-0.9 of tube length from base, completely exserted; filaments 0.2-1.7 mm long; anthers 3.9-5.6 by 0.7-1.6 mm, pubescent outside, sometimes only sparsely so at base. Gynoecium of 2 free carpels united into a common style, ovaries 0.7-1.8 mm long, glabrous; style and style head 3.5-5.5 mm long. Fruit of paired follicles; 10-50 cm by 5-17 mm, glabrous, lenticellate or not. Seeds linear; 18-22 by 1.7-2.5 mm; coma 3.3-4 cm long.
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Trees to 40 m tall, glabrous except for flowers. Bark dark gray, branchlets brownish, lenticellate. Petiole 5-7 mm; leaf blade oblong or narrowly elliptic, rarely ovate, 7-18 X 2.5-8 cm, apex acuminate to caudate-acuminate; lateral veins 5-11 pairs. Cymes ca. 6 cm; peduncle ca. 1 cm, puberulent to glabrous. Pedicel 1-1.5 cm. Sepals broadly ovate, ca. 1 mm, pubescent outside, apex rounded or obtuse. Corolla white or yellowish, funnelform, tube 1.5-3 mm; lobes narrowly elliptic, 5.5-13.5 mm, papillate; corona fringed, scales 25-35, linear, puberulent. Anthers as long as corona, puberulent. Ovaries 2, distinct. Follicles cylindric, distinct, 20-35 cm X ca. 7 mm, lenticellate. Seeds sublinear, 1.5-2 cm, coma to 4 cm. Fl. Apr-Aug, fr. Jul-Dec. 2n = 22.
Tree to 40 m high, evergreen. Leaves glabrous or with scattered indumentum; petiole 5–10 mm long; lamina narrowly elliptic, elliptic or obovate, to 18 cm long, to 8 cm wide, cuneate, acute to acuminate, discolorous, dark green above, pale green below; secondary veins 6–11 each side of midrib, obscure above. Flowers fragrant. Corolla subrotate, white to cream-yellow; tube 1.5–3 mm long; lobes narrowly obovate to obovate, 5.5–13.5 mm long, internally papillose. Corona fimbriate, shorter or longer than stamens. Fruit 20–35 cm long, lenticellate. Seeds very narrowly oblong, 18–20 mm long; coma 40 mm long.
Evergreen forests, secondary forests and sandy thickets on the strand, usually at low to medium elevations. Montane forests, valley thickets; at elevations from 200-1,000 metres in China.
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Grows in lowland notophyll vine forestin soils derived from volcanic substrates.
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