Habit: tree

Distribution: other countries: Vietnam

Young Branch: glabrous

Leaf upper surface: glabrous

Leaf texture: thickly leathery

Leaf lower surface: glandular

Leaf length (cm): 15-20 cm

Leaf width (cm): 6-8 cm

Leaf shape: oblong

Leaf margin: serrulate

Leaf apex: obtuse

Leaf base: cordate, stem-clasping

Lateral vein: pairs: 10-14

Petiole length (mm): 3-5 mm

Petiole: glabrous, sulcate

Flower: solitary

Flower position: axillary, subterminal

Pedicel length (cm): 15-20 cm

Bractlet number: 5-6

Bractlet: persistent

Bractlet position: spirally arranged on the pedicel

Bractlet shape: broadly ovate, semiorbicular

Branchlet length (mm): 1-4 mm

Bractlet width (mm): 1.5-4.5 mm

Bractlet hairiness: glabrous on both sides, pubescent inside

Sepal: leathery, persistent

Sepal number: 5

Sepal shape: orbicular, suborbicular

Sepal length (mm): 8-10 mm

Sepal width (mm): 7-9 mm

Sepal hairiness: glabrous outside, pubescent inside

Petal number: 11-14

Petal color: red

Petal shape: obovate, broadly obovate

Petal apex: round

Petal length (mm): 20-35 mm

Petal width (mm): 15-25 mm

Petal: basally slightly connate

Stamen length (mm): 30 mm

Filaments hairiness: pubescent at the base of inner filaments, pubescent

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

Ovary: glabrous

Ovary locus: 5-locular

Style number: 5

Style length (mm): 20-23 mm

Style hairiness: glabrous

Style: 5-cleft