Habit: tree

Plant Height (m): 7-15 m

Elevation (m): 1500-2250 m

Distribution: China: Guangxi, Guizhou, Yunnan

Young Branch: glabrous

Terminal bud hairiness: glabrous

Leaf upper surface: glabrous

Leaf texture: leathery

Leaf lower surface: glabrous, with papilla

Leaf length (cm): 12-18 cm

Leaf width (cm): 3-6 cm

Leaf shape: oblong-elliptic, elliptic

Leaf margin: serrulate

Leaf apex: acuminate, acute, obtusely pointed

Leaf base: broadly-cuneate, cuneate

Lateral vein: pairs: 8-10

Petiole length (mm): 5 mm

Petiole: glabrous

Flower: solitary, 2-5 flowers clustered

Flower position: axillary

Flower diameter (cm): 4-6 cm

Pedicel length (cm): 0.8-1.4 cm

Pedicel hairiness: glabrous

Bractlet number: 2-3

Bractlet: early deciduous

Bractlet position: near the middle of pedicel

Bractlet shape: ovate

Branchlet length (mm): 2.5-3 mm

Bractlet hairiness: glabrous outside, sericeous inside

Sepal: persistent

Sepal number: 5-6

Sepal shape: broadly ovate, orbicular

Sepal length (mm): 5-6 mm

Sepal hairiness: glabrous outside, margin ciliated, sericeous inside

Petal number: 10-13

Petal color: white

Petal shape: broadly obovate

Petal apex: round

Petal length (mm): 25-30 mm

Petal width (mm): 20-25 mm

Petal: basally slightly connate

Stamen length (mm): 15-20 mm

Filaments hairiness: glabrous

Filaments: the base of outer filaments connate, not forming a tube

Ovary: glabrous

Ovary shape: orbicular

Ovary locus: 4-locular, 5-locular

Relative length of stamens and styles: equal

Style: 4-parted, 5-parted to the middle

Fruit shape: oblate

Fruit height (cm): 2-3 cm

Fruit diameter (cm): 3-5 cm

Seed number per locule: 1, 2

Seed color: brown

Seed hairiness: glabrous