Description from Flora of China
Trees, to 25 m tall. Old twigs densely noded and lenticellate; young twigs green, pale brown or reddish brown sparsely appressed pubescent; terminal buds cylindric. Stipular scar 2-4 mm or absent. Petiole 1.5-4 cm; leaf blade obovate to narrowly obovate, 9-15 × 3-7 cm, leathery, abaxially glaucous and sparsely white glossy appressed pubescent or with scattered reddish brown erect trichomes, adaxially glabrous and glossy, secondary veins 8-13 on each side of midvein and slender, reticulate veins slender, dense, and prominent on both surfaces when dry, base cuneate to broadly cuneate, apex acute, shortly acuminate, or caudate. Brachyblasts with 2-4 bract scars. Flowers 5-6 cm in diam., fragrant. Tepals 9-12, yellow, obovate, narrowly obovate, or oblanceolate, 2-5 × 1-2.5 cm, slightly fleshy; tepals of inner whorl smaller. Stamens 1-2 cm; filaments green, ca. 2 mm; connective exserted and forming a ca. 1 mm mucro; anthers 0.8-1.2 cm, dehiscing introrsely. Gynoecium cylindric, 3.5-4 cm; carpels 3-6 mm; ovaries ovoid to ovoid-ellipsoid, with dense silvery or yellow appressed fine trichomes; ovules ca. 14 per carpel; styles nearly as long to as long as ovaries. Fruit 6-15 cm; fruiting torus wrinkled; mature carpels purplish brown, ellipsoid to obovoid, 1-2.5 cm, with grayish yellow lenticels, 2-valved, apex with a curved short beak. Fl. Mar-May, fr. Aug-Sep.
● Forests; 600-2000 m. Chongqing, Guizhou, SW and W Hubei, Hunan, Jiangxi, C, S, and W Sichuan, NE and SE Yunnan.