Micrechites polyanthus

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Himalaya to W. Malesia: Andaman Is., Assam, Borneo, China South-Central, China Southeast, East Himalaya, Hainan, Jawa, Laos, Malaya, Myanmar, Nepal, Sumatera, Thailand, Vietnam as per POWO;
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China (Guangdong, Guangxi, Hainan, Yunnan), India (Assam, Meghalaya, Sikkim, C- to E-Himalaya, NE-India, Darjeeling), Laos, Myanmar [Burma], Nepal, Thailand, Vietnam, Java, peninsular Malaysia (Kedah, Perak, Pahang, Selangor), Sumatra, Andaman Isl., Bhutan, Sikkim as per CoL;

Miq. Fl. Ind. Bat. ii. 456 ; leaves ellliptic oblong or oblong-lanceolate obtuse or obtusely acuminate glabrous, nerves numerous very slender nearly straight, cymes puberulous short axillary and in terminal racemes, flowers 1/8 in. long, corolla subcampanulate glabrous. Tabernaemontana polyantha, Blume Bijd. 1029 ; A. DC. Prodr. viii. 376.

Malacca ; Maingay (Kew Distrib. 1081). Andaman Islds. ; Kurz.—Distrib. Java.

Branches slender, obscurely angled. Leaves 2-3 by 1-1.1/2 in., narrowed at both ends ; nerves 10-15 pairs, with intermediate still more slender ones, very spreading, but not horizontal ; petiole 1/2 in. Cyme very shortly peduncled, about 1/2 in. diam., few-fld. ; bracts minute ; pedicels short, stout, and calyx densely pubescent ; flowers 1/6 in. long. Calyx-lobes round. Corolla glabrous, subcampanulate, lobes about equal¬ling the throat, falcately lanceolate, very oblique, mouth bearded. Anthers acute. Ovary much longer than the disc, hirsute ; style short, stigma conical.
(Attributions- IBIS Flora (FBI))

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I need id assistance of following 3 images belonging to Apocynaceae.
Date: 27.07.2015
Locality: North Point, Darjeeling
Altitude: 6850 ft (GPS data)
Habit: climber with milky latex
Corolla: mature bud conditions, dark red
Status: Very Rare (only 2 individual plants seen)

Could be some Trachelospermum species.

Trachelospermum species so far in efi 

Micrechites polyanthus (Blume) Miq. ??

I think possible as per FoC illustration and GBIF– specimen one and two

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References: POWO  Catalogue of Life (Micrechites polyantha (Bl.) Miq.) The Plant List Ver.1.1  WCSP  IPNI  GBIF– specimen one and two (High resolution specimens) Flora of China  FoC illustration Annotated checklist of Flowering plants of Nepal  Flora Malesiana  IBIS Flora (FBI)