Habit: tree

Plant Height (m): 4 m

Elevation (m): 130-210 m

Distribution: other countries: Vietnam

Young Branch: pubescent, stout

Leaf upper surface: glabrous

Leaf texture: papery

Leaf lower surface: pubescent

Leaf length (cm): 24-26 cm

Leaf width (cm): 8-8.5 cm

Leaf shape: oblong-elliptic, oblong

Leaf margin: sharply serrate

Leaf apex: acute, obtusely pointed

Leaf base: cordate

Lateral vein: pairs: 16-20

Petiole length (mm): 5-7 mm

Petiole: pubescent

Flower: solitary

Flower position: axillary, subterminal

Pedicel: present

Pedicel length (cm): 3-4 cm

Bractlet number: 5-6

Bractlet shape: ovate, suborbicular

Bractlet hairiness: pubescent inside

Sepal number: 5

Sepal shape: broadly ovate

Sepal length (mm): 9-14 mm

Sepal width (mm): 7-10 mm

Sepal hairiness: pubescent inside

Petal number: 9-12

Petal color: red

Petal shape: broadly ovate, obovate

Petal hairiness: pubescent on both sides

Stamen length (mm): 25 mm

Filaments hairiness: pubescent at the base of inner filaments

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

Ovary: pubescent

Ovary shape: ovate

Ovary locus: 3-locular

Relative length of stamens and styles: equal, stamens shorter than styles

Style number: 3

Style length (mm): 25-28 mm

Style hairiness: pubescent at the lower part

Style: free