Habit: shrub, tree

Plant Height (m): 4-10 m

Elevation (m): 390-780 m

Distribution: other countries: Vietnam

Young Branch: pubescent

Leaf upper surface: glabrous

Leaf texture: leathery

Leaf lower surface: pubescent, midrib hairy

Leaf length (cm): 9-16 cm

Leaf width (cm): 3-5.5 cm

Leaf shape: oblong

Leaf margin: serrulate

Leaf apex: caudate

Leaf base: broadly-cuneate, obtuse

Lateral vein: pairs: 7-8

Petiole length (mm): 5-7 mm

Petiole: pubescent

Flower: solitary, 2-5 flowers clustered

Flower position: axillary

Flower diameter (cm): 1.5 cm

Pedicel length (cm): 0.7-0.8 cm

Bractlet number: 2-3

Bractlet: persistent

Bractlet position: upper part of the pedicel

Bractlet shape: triangular-ovate

Branchlet length (mm): 1-2 mm

Bractlet hairiness: glabrous on both sides, margin ciliated

Sepal: margin membranous

Sepal number: 5

Sepal shape: ovate

Sepal length (mm): 3-5 mm

Sepal hairiness: glabrous on both sides, margin ciliated

Petal number: 6-7

Petal color: white

Petal shape: obovate, broadly obovate

Petal apex: round

Petal length (mm): 10-12 mm

Petal width (mm): 7-8 mm

Petal: basally slightly connate

Stamen length (mm): 7-9 mm

Filaments hairiness: glabrous

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

Ovary: pubescent

Ovary shape: orbicular

Relative length of stamens and styles: equal

Style number: 3, 4, 5

Style length (mm): 8 mm

Style hairiness: pubescent at the lower part

Style: free

Fruit shape: orbicular

Fruit diameter (cm): 2.5 cm

Seed color: brown, reticulate striation