Impatiens insignis DC., Prodr. 1: 688 1824. (syn: Impatiens coriosepala Hook. fil.; Impatiens pershadiana Hook. fil. ex Burkill; Impatiens racemosa D. Don);
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Nepal, NE-India as per Catalogue of Life;
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Impatiens insignis DC. (accepted name) : 4 posts by 3 authors. Attachments (6)
Sharing some pictures of Impatiens insignis DC. (accepted name) shot at Shankharapur Sankhu Nepal on 28 September 2013 at  5300 ft.

Looks very similar to old drawing in Wallich, N., Plantae Asiaticae Rariores, vol. 2 (1831)


Location: Raniban, Balaju, Kathandu, Nepal
Altitude: 4400 ft.
Date: 31 August 2013
Attachments (3)

I think you are right.
Flowers look like in old drawing
Inflorescences should be many flowered and stems with kind of wings (?).
I will be busy in next several weeks (field work, conference, some break without internet connection).
I will be available in the end of September for more serious determination.


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Impatiens insignis DC. : 12 posts by 4 authors. Attachments (8)

Location:  Charikot, Nepal
Date: 5 September 2017
Elevation : 6000 ft.

Beautiful images, and I was always wanted to see this plant and it is I. insignis


Again compare with this old illustration
I think your plant is I. insignis


Location:  Kharipati, Bhktapur, Nepal
Date: 12 November 2017
Elevation : 4400 ft
Attachments (6)


It looks like in this old plate, and this time with some small details, which were impossible to see in your earlier posts :-).


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Impatiens insignis DC.: 7 high res. images.
Location: Surya Binayak, Bhaktapur, Nepal
Altitude: 1500m.
Date: 28 August 2023
Habit : Wild