Impatiens arunensis Grey-Wilson, Kew Bull. 44: 65 (1989) as per efi thread;
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Impatiens arunensis Grey-Wilson: 9 very high res. images.
Location: Rara, Nepal
Altitude: 2957m.
Date: 20 August 2021
Habit : Wild
Habit : Wild
Wow!!! Anybody validated?
1 book image
Yes, … Appears close as per book images attached by you.
POWO gives it as a syn. of Impatiens bicornuta Wall.
Pl. see Impatiens bicornuta Wall.:
https://efloraofindia.com/2012/11/08/impatiens-bicornuta/
https://efloraofindia.com/2016/11/03/impatiens-bicornuta-group/
https://efloraofindia.com/2016/11/03/impatiens-bicornuta-group/
How is it different?
discolor to kathmanduensis but our expert Mr. Gogoi has already published book
separating all these species as individual sp.. Accordingly, POWO has already
separated discolor and kathmanduensis in their site. I hope they shall be separating
these three sp. as well in due course of time.
https://www.worldfloraonline.org/taxon/wfo-0000730280
https://www.worldfloraonline.org/taxon/wfo-0000730244
https://www.ipni.org/n/936768-1
https://www.worldfloraonline.org/taxon/wfo-0000730280
https://www.worldfloraonline.org/taxon/wfo-0000730244
https://www.ipni.org/n/936768-1
https://www.ipni.org/n/103490-1
2 book screenshots
2 book screenshots

The Postal Service Department, Govt. of Nepal recently published a postage stamp commemorating
the plant sp. Impatiens arunensis Grey-Wilson !
1 image.
1 image.
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Kailash-Mansarovar Yatra::Balsam Sp for ID NSJ-OCT 16/25 : 3 posts by 3 authors. Attachments (2)
Balsam Sp for ID. Located on the way to Gala from Sirkha (Uttarakhand) along Nepal border. Altitude around 8000 feet.
Balsam Sp for ID. Located on the way to Gala from Sirkha (Uttarakhand) along Nepal border. Altitude around 8000 feet.
This is something from Impatiens bicornuta group. I. kaliensis described as deep pink or lilac flowered was reported from nowadays Uttarakhand, but without measurements it is difficult to tell.
Yes, for me !
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References:
efi thread POWO (Impatiens bicornuta Wall.) Catalogue of Life (Impatiens bicornuta Wall.) WFO