Habit: shrub

Plant Height (m): 1-4 m

Elevation (m): 1200-1800 m

Distribution: China: Sichuan

Young Branch: glabrous

Leaf upper surface: glabrous

Leaf texture: leathery

Leaf lower surface: glabrous

Leaf length (cm): 6-12.5 cm

Leaf width (cm): 2-4 cm

Leaf shape: oblong

Leaf margin: serrulate

Leaf apex: tail-pointed, caudate

Leaf base: cuneate

Lateral vein: pairs: 6-7

Petiole length (mm): 10 mm

Petiole: hirsute

Flower: solitary

Flower position: subterminal

Flower diameter (cm): 4-5 cm

Pedicel: absent

Bractlet number: 9-10

Bractlet shape: orbicular, semiorbicular, suborbicular

Branchlet length (mm): 1.5-10 mm

Bractlet hairiness: glabrous inside, pubescent outside

Sepal: margin membranous

Sepal number: 9-10

Sepal shape: orbicular, suborbicular, semiorbicular

Sepal length (mm): 1.5-10 mm

Sepal hairiness: glabrous inside, pubescent outside

Petal number: 6-8

Petal color: white

Petal shape: obovate

Petal length (mm): 25-35 mm

Petal width (mm): 20-30 mm

Stamen length (mm): 20-25 mm

Filaments hairiness: glabrous

Filaments: lower half of outer filaments connate, not forming a tube

Ovary: pubescent

Ovary shape: suborbicular

Relative length of stamens and styles: equal

Style number: 3

Style length (mm): 20-25 mm

Style hairiness: pubescent at the lower part

Style: free

Fruit shape: suborbicular

Fruit diameter (cm): 1.5-2 cm

Pericarp: pubescent

Seed number per locule: 1, 2

Seed color: brown

Seed hairiness: pubescent