Prismatomeris tetrandra

.
Indian Subcontinent to S. China and Philippines: Andaman Is., Assam, Bangladesh, Borneo, Cambodia, China South-Central, China Southeast, East Himalaya, Hainan, India, Malaya, Myanmar, Philippines, Sri Lanka, Thailand, Vietnam (from POWO)
.

Small trees, bark grey, fissured. Leaves 11-15 x 3-5 cm, obovate or oblong, apex abruptly acuminate, base cuneate, glabrous, glossy above, lateral nerves 7-9 pairs, reticulations thin, prominent; petiole to 1.2 cm long; stipules glabrous, shining. Cymes terminal, few flowered. Flowers 2.5 cm long, white, slightly fragrant; calyx limb truncate, shortly 5-toothed; corolla lobes spreading; anthers linear, included; ovule pendulous, stigma 2-lobed. Berry 1 cm across, crowned by the calyx limb.

Flowering and fruiting: December-January
Evergreen forests
South India and Sri Lanka
(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi

/wp-content/uploads/2020/10/IMG_8951-7.jpg/wp-content/uploads/2020/10/IMG_8952-8.jpg

Fwd: UP-Meghalay 2 : 4 posts by 3 authors. Attachments (2)
Id pl, shrub in the forest near Mauphlang-Meghalay.

There is a probability of Prismatomeris tetrandra (Roxb.) K. Schum. (Coffea tetrandra Roxb.).

Several herb, can be viewed at KEW site, given the couple of images attached here this is the only probable identity.

… ID is doubtful.

It would had helped me if … explained why the suggested ID is doubtful. Description can be checked in FoC, FI, FBI or may be in some other sources I do not know.

For visual comparison two pictures in the last but one row at http://www.cvh.org.cn/db/data_photos/PPING_CNAME can be checked, ignoring the spelling “tetrantra“; or illustrations can be checked at http://plantillustrations.org/species.php?id_species=839095.
If long corolla lobes are the concern Roxburgh’s view can be read in FI.
your id seems to be correct. I was confused because of 4 petals of the flower as seen by me.
Images of P. tetranda as seen on the net have five petaled flower.