Elatostema rupestre (Buch.-Ham. ex D.Don) Wedd., Arch. Mus. Hist. Nat. 9: 304 1856. (syn: Elatostema zollingerianum Miq.; Procris punctata Wall.; Procris rupestris Buch.-Ham. ex D. Don);
China (S-Yunnan), NE-India, Nepal, Bhutan, Sikkim, Vietnam, Bangladesh as per Catalogue of life;

SK 2769 04 October 2020 : 18 posts by 3 authors.
Location: Sankhu, Nepal

Date: 12 September 2020
Elevation: 1464 m.
Habit: Wild
Which Elatostema sp please ?

I do not think matches with any species available so far at comparative images at Elatostema

Any guesses as per checklist?

I have no idea to this one

Check other species as per Checklist in GBIF.

Elatostema rupestre (Buch.-Ham. ex D.Don) Wedd. ??

Could be.. but comparison of leaf size and stipules will guide the path.
unable to find short and exact keys, photographs. 

Yes, …,
Looks very close to specimens from Nepal at GBIF as below:

Sorry but actually E. rupestre has been excluded from China in recent revisions made by Wang (2012, 2014). So I don’t have well understand on what is the real E. rupestre. But your images indeed look same to some of the specimens that identified as this species

Thank you … for the ID validation. Do I understand that this ID is no more in existence ?
Just a curiosity!

I think he might be trying to say that this species from China might have been misidentified earlier and now placed as some other taxon.