Habit: shrub, tree

Plant Height (m): 2-6 m

Elevation (m): 2100-2550 m

Distribution: China: Yunnan

Distribution: other countries: Burma

Young Branch: glabrous

Leaf upper surface: glabrous

Leaf texture: papery, leathery

Leaf lower surface: glabrous, glandular, with papilla

Leaf length (cm): 6-12 cm

Leaf width (cm): 2-4.5 cm

Leaf shape: oblong-elliptic, oblong

Leaf margin: sharply serrate

Leaf apex: caudate

Leaf base: broadly-cuneate

Lateral vein: pairs: 10

Petiole length (mm): 10 mm

Petiole: glabrous

Flower: solitary

Flower position: axillary, subterminal

Flower diameter (cm): 3.5-4.5 cm

Pedicel: absent

Bractlet number: 9-10

Bractlet: deciduous after anthesis

Bractlet shape: semiorbicular, suborbicular

Branchlet length (mm): 1.5-12 mm

Bractlet hairiness: pubescent on both sides

Sepal: persistent, deciduous after anthesis

Sepal number: 9-10

Sepal shape: suborbicular, semiorbicular

Sepal hairiness: pubescent on both sides

Petal number: 6-8

Petal color: white

Petal shape: obovate, broadly obovate

Petal apex: retuse, round

Petal length (mm): 20-25 mm

Petal width (mm): 13-17 mm

Petal: basally slightly connate

Stamen length (mm): 13 mm

Filaments hairiness: glabrous

Filaments: lower half of outer filaments connate into a short tube

Ovary: pubescent

Ovary shape: orbicular

Relative length of stamens and styles: stamens longer than styles

Style number: 3

Style length (mm): 6-9 mm

Style hairiness: glabrous, pubescent at the lower part

Style: free

Fruit shape: orbicular, suborbicular

Fruit height (cm): 3-4 cm

Fruit diameter (cm): 3.5-4.5 cm

Pericarp: pubescent, glandular