Tylophora tenerrima

Tylophora tenerrima Wight, Contr. Bot. India 50 1834. (syn: Homolostyles tenerrima Wall. ex Wight; Homostyles tenerrima Wall. ex Hook. fil.; Vincetoxicum tenerrimum (Wall.) Kuntze);

Bhutan, Sikkim, Chumbi, Nepal, Pakistan (Swat, Hazara), Jammu & Kashmir (Kashmir, Poonch), India (E- & N-India, subtropical Himalayas) as per Catalogue of Life;

Common name: Tender Himalayan Ipecac

Very slender stemmed, free flowering, climbing shrub with long twining branches. Plant nearly glabrous; Stems with two lines of short hairs. Leaves lanceolate to leanceolate ovate, 1.5-8 x 0.3-2cm, apex accuminate, base rounded to cuneate, membranous, sparsely pubescent above, particularly on main veins, almost glabrous below; petiole 4-11mm, pubescen. Flowers deep red to crimson, in 2-6 flowered lax, long and very slender branched cymes. Peduncle 2-5cm long; pedicels 0.5-4cm, both sparsely puberulent. Calyx lobes lanceolate ovate, c 1.5 x 0.5mm, ciliate. Corolla glabrous outside, minutely hirsute within, tube c 1mm long; lobes linear oblong, c 3 x 2mm. Gynostegium c 2mm broad and high. Staminal coronal scales short, out curved apical linear appendages. Follicles slender, narrowly lanceolate in outline, 4-7.5 x 0.5-0.8cm, thin skinned, only seen solitary. Seeds small, 5 x 2mm; coma c 3cm.
Fl. May-July
Climber on shrubs in moist, broad-leaved forests, 1200-2100m
(Attributions- A.J.C. Grierson & D.G. Long. Flora of Bhutan. Published by RGoB and RBGE. 1999 from Bhutan Biodiversity Portal)

https://08511630493324166816.googlegroups.com/attach/41c55690449ab/DSC_0908.JPG?part=0.1&view=1&vt=ANaJVrFCJdaHO3utfvAn5wQaYH1TqRapXQvFgnFEero2zYcA8PR40Q7giHO9xjr5zJJVkkQMPflp3D9jSliZaY3RMDdrydzCmY-ahEknsMALGPQhs69r_Cg
https://08511630493324166816.googlegroups.com/attach/41c55690449ab/DSC_0913.JPG?part=0.2&view=1&vt=ANaJVrGQ6gVJaMcw3DTi7loEQZGoGBKv9Cm0yd8fKaoNevqg3hywigisMT-M3oJ-w7meGpGcK2wbQ2z0ZV7uMk8V9bJZwVHgxgpOmspFr8vXyaEQsDrcCiI
https://08511630493324166816.googlegroups.com/attach/41c55690449ab/DSC_0915.JPG?part=0.3&view=1&vt=ANaJVrEesxU-Mix5H3DesBjfHiOzK1NNzoDiBolTku1xCTtQY1_tI9-d6YnV1UsY28ZmTXTJ3Z8QV7tTOw6umq5Lkp0Z2KGd2iy5Cm8y0F8JWx9rZ2tylU4
SK687 31 JUL-2017:ID : 8 posts by 2 authors. Attachments (6)
Location: Nagarkot, Nepal
Altitude:7000 ft.
Date: 20 June 2017 
Vincetoxicum nigrum (L.) Moench  Syn: Cynanchum nigrum (L.) Pers.  ???
If correct not listed in Nepal ! 
Pl. also check comparative images at Apocynaceae‎ as this species is not recorded from Nepal or India.
Although it appears closer to images of Vincetoxicum nigrum at
Also check images of Cynanchum louiseae at the following:
I tried to check on net. But could not match with any image of this species. What about two choices I gave link of?
Tylophora tenerrima Wight
No Nepali Name ! 
What is the basis for this id? 
ID by Nepali botanists  and I guess matching with the description
according to the link: 

Tylophora tenerrima Wight : 7 posts by 1 author. 7 images- 6 to 7 mb each.
Location: Latha Bhanjyang
Date: 20 June 2020
Elevation: 2114m.
Habitat: Wild
Location:  Pharping
Date: 28 June 2020
Elevation : 1695m.
Habitat: Wild
7 images- 2 to 7 mb each.
https://groups.google.com/group/indiantreepix/attach/3307f8fbb7fd7/DSC_0723.JPG?part=0.1&authuser=0&view=1
 
Fruit on 1 August 2020-
1 image- 7 mb.


References:

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