Pueraria lobata subsp. thomsonii

Pueraria montana var. thomsonii (Benth.) M.R.Almeida, Fl. Maharashtra 2: 122 (1998) (syn: Dolichos grandifolius Graham; Pueraria lobata subsp. thomsonii (Benth.) H.Ohashi & Tateishi; Pueraria lobata var. thomsonii (Benth.) Maesen; Pueraria thomsonii Benth.);
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Tropical & Subtropical Asia: Bangladesh, China South-Central, China Southeast, East Himalaya, Hainan, India, Laos, Myanmar, Nansei-shoto, Philippines, Taiwan, Thailand, Tibet, Vietnam as per POWO;
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MS,Sept.,2021/07 Pueraria sp. ?for id.: 4 images.
Location : Farkawn, Mizoram
Date : 06-10-2018
Habit : Climber
Habitat : Wild

Yes, appears so as per comparative images at Pueraria
What are the keys?

I am not getting sure about Pueraria montana var. thomsonii as per keys in Flora of Mizoram as per POWO specimens- one and two and GBIF specimens.
May I request you to pl. post high res. images to further check the details.

4 high res. images.

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References: POWO  Catalogue of Life (syn. of Pueraria montana var. chinensis (Ohwi) Sanjappa & Pradeep) The Plant List Ver.1.1 (syn. of Pueraria montana var. chinensis (Ohwi) Sanjappa & Pradeep) ILDIS (syn. of Pueraria montana var. chinensis (Ohwi) Sanjappa & Pradeep)  GBIF (High resolution specimens) High resolution specimen  Flora of China