Habit: shrub, tree

Plant Height (m): 1-6 m

Elevation (m): 950-1000 m

Distribution: China: Sichuan

Young Branch: pubescent

Leaf upper surface: midrib hairy

Leaf texture: leathery

Leaf lower surface: glabrous, midrib hairy

Leaf length (cm): 5-9 cm

Leaf width (cm): 2-4.5 cm

Leaf shape: oblong-elliptic, elliptic

Leaf margin: serrulate

Leaf apex: caudate

Leaf base: broadly-cuneate, cuneate

Lateral vein: pairs: 7-8

Petiole length (mm): 2 mm

Petiole: pubescent

Flower: solitary, 2-5 flowers clustered

Flower position: axillary, subterminal

Flower diameter (cm): 2-2.5 cm

Pedicel: tenuous

Pedicel length (cm): 0.5-0.7 cm

Bractlet number: 4-5

Bractlet shape: semiorbicular

Branchlet length (mm): 0.5-1.5 mm

Bractlet hairiness: glabrous outside, margin ciliated

Sepal: margin membranous

Sepal number: 5

Sepal shape: broadly ovate, suborbicular, lower 1/2 part connate into cup-shaped

Sepal hairiness: sericeous inside

Petal number: 5-6

Petal color: white

Petal shape: obovate-elliptic, broadly obovate

Petal apex: retuse

Petal length (mm): 15-23 mm

Petal width (mm): 10-17 mm

Petal: basally slightly connate

Stamen length (mm): 15-18 mm

Filaments hairiness: pubescent

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

Ovary: glabrous

Ovary shape: ovate

Ovary locus: 3-locular

Relative length of stamens and styles: equal

Style: 3-cleft

Fruit shape: orbicular

Fruit height (cm): 1.5-2 cm

Fruit diameter (cm): 1.2-1.5 cm

Seed number per locule: 1

Seed shape: orbicular

Seed color: castaneous