Syzygium polypetalum (Wall. ex Wight) Merr. & Perry, Brittonia 4: 125 (1941) (syn: Eugenia angustifolia Roxb.; Eugenia polypetala (Wall.) Wight; Jambosa polypetala Wall.);
Arunachal Pradesh to Myanmar: Assam, Bangladesh, East Himalaya, Myanmar as per POWO;

Trees with lax crown, branching near the base; branchlets with prominent leaf scars. Leaves, simple, ternate or 4 in a whorl; petioles ca. 2-3 mm long, short; lamina ca. 10-18 x 1-3 cm, linear-lanceolate or elliptic, oblong-oblanceolate, attenuate at base, acuminate at apex, margin recurved; secondary nerves 8-12 pairs. Inflorescences in umbellate cymes, few-flowered, lateral from the axils of fallen leaves; Flowers ca. 3-4 cm across, white; calyx tube ca. 1.5-2 cm long, campanulate; lobe 4-6, ca. 1 cm across, reddish-brown; petals 12-16, free, orbicular; style long, persistent. Berries subglobose.
Mixed forest
(Attributions- French Institute of Pondicherry as per India Biodiversity Portal)  



Shrub/Tree Id from Bangladesh_SM_1406 : 11 posts by 5 authors. Attachments (1)
Habitat: Hill slope/near water
Location: Sangu Matamuri Wildlife Sanctuary, Bandarban 
Flowering: February
Picture taken: February, 2019

Syzygium jambos ?

i have never seen such narrow leaves on rose apple trees whether in India or in  the american tropics

Could be Syzygium occidentalis…..

This is a shrub and profusely grown along the bank slope of Sangu River. During the rainy season it can tolerate flood conditions

Syzygium jambos

To me looks different at first glance at

I could not find a match as per comparative images at Syzygium
What are the species reported from the area ?

Try Syzygium polypetalum (Wall.) Merr. & L.M.Perry
Thanks, …

To me leaves appear to be opposite in the links, which is not so in the posted image.

The leaves would be “ternate”, Sir, not opposite, vide “Bengal Plant, vol I, David Prain”

and “leaves tern, linear-lanceolar……. native of Chittagong…..”, vide “Flora Indica, vol II”

Yes, you appear to be right for Syzygium polypetalum as per GBIF.

Yes it is correct. Syzygium polypetalum