Elaeocarpus aristatus

Large trees, buttressed, 20-40 m tall with conical crown. Leaves simple, alternate, spiral; stipules subulate, caducous; petioles ca. 1.5-5 cm long, swollen at both ends, geniculate, glabrous; lamina ca. 15-30 x 4-10 cm, obovate, elliptic or oblanceolate, cuneate or acute at base, rounded or subacute at apex, distantly serrulate or subentire, glabrous, thinly coriaceous; secondary nerves 12-18 pairs, obliquely arcuate. Inflorescences axillary racemes ca. 8-20 cm long, rusty villous, glabrescent with age; Flower-buds lanceolate, ribbed; Flowers ca. 2 cm across, white, fragrant, drooping; pedicels ca. 1-2 cm long, rusty villous; sepals ca. 0-1.5 cm long, lanceolate, narrowly triangular or oblong, rusty tomentose without, glabrous within; petals ca. 12-16 mm long, dull white, silky, hairy outside, laciniate; stamens 40-60, subulate; filaments ca. 1 cm long, puberulous or glabrous; anthers ca. 6 mm long, awned; ovary ovoid, hairy, 2-loculed; styles subulate, longer than anthers, tapering from a conical base. Drupes ca. 3-3.5 cm long, ellipsoid; pyrenes pointed at both ends, compressed, oblong, rugose, 1-loculed.
Flowering: April-June. Fruiting: July-October

MS Nov.2016/10 Elaeocarpus rugosus ? : 5 posts by 2 authors. Attachments (3)

Location : Tamdil, Mizoram
Altitude : ca 730 m.
Date : 20-08-2016
Habit : Middle-sized or large evergreen tree
Habitat : Wild

Appears close to images at fpcn

I guess Elaeocarpus rugosus Roxb. ex G.Don is the exact match.

As keys were not working in the absence of flowers, I tried all species listed in the book as per comparative images at Elaeocarpus and specimens from India in GBIF as below:

As keys were not working in the absence of flowers, I tried all species listed in the book as per comparative images at Elaeocarpus and specimens from India in GBIF as below:

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References: Catalogue of Life  The Plant List Ver.1.1  IPNI GBIF (with type specimen) India Biodiversity Portal  Bhutan Biodiversity Portal
Forest Plants of Eastern India By Amal Bhusan Chaudhuri (1986- details)
Elaeocarpus aristatus (Elaeocarpaceae): New for southern India– D.F. Irudhyaraj & Ramasubbu Raju- TAPROBANICA,  February, 2015. Vol. 07, No. 02: pp. 103–104, pl. 11.
The genus Elaeocarpus (Elaeocarpaceae) in Northeast India – Laishram Ricky Meitei & JS Khuraijam-March 2019 NeBIO 10(1)