Chamaecrista nictitans

Chamaecrista nictitans (L.) Moench (syn: Cassia aeschinomene Collad.; Cassia aspera var. mohrii Pollard; Cassia chamaecrista var. nictitans Kuntze; Cassia mimosoides subsp. leschenaultiana (DC.) H.Ohashi; Cassia multipinnata Pollard; Cassia multipinnata var. nashii Pollard; Cassia nictidans L.; Cassia nictitans L.; Cassia nictitans var. conmixta (Pollard & Maxon) Millsp.; Cassia nictitans var. hebecarpa Fernald; Cassia nictitans var. leiocarpa Fernald; Cassia nictitans var. mohrii (Pollard) J.F.Macbr.; Cassia nictitans var. multipinnata (Pollard) J.F.Macbr.; Cassia procumbens L. (ambiguous synonym); Chamaecrista aeschinomene (Collad.) Greene; Chamaecrista aspera var. mohrii (Pollard) Pollard; Chamaecrista mohrii (Pollard) Britton & Rose; Chamaecrista multipinnata Pennell; Chamaecrista nictitans var. conmixta Pollard & Maxon; Chamaecrista nictitans var. leiocarpa (Fernald) Moldenke; Chamaecrista procumbens (L.) Greene; Nictitella amena Raf.);   
    
India (N):  Bihar; Delhi; Uttar Pradesh; West Bengal and other countries as per ILDIS;

Argentina; Bangladesh; Belize; Bhutan; Bismarck Archipelago; Bolivia; Brazil;
Caribbean-TRP; Colombia; Costa Rica; Ecuador; El Salvador; French Guiana;
Gruzia; Guatemala; Guyana; Hawaii; Honduras; India; Indonesia; Irian Jaya; Jawa;
Malaysia; Mauritius; Mexico; Nepal; Nicaragua; Panama; Papua New Guinea;
Paraguay; Peninsular Malaysia; Peru; Reunion; Singapore; Solomon Is; Sri Lanka;
Surinam; United States; Venezuela as per Catalogue of Life;

Common name: Partridge Pea, Sensitive partridge pea, Sensitive pea, Wild Sensitive Plant

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SK 2546 18 March 2020 : 18 posts by 2 authors. 3 images- 5, 6 & 7 mb each.

Location: Panipokhari, Kathmandu
Date: 13 March 2020
Elevation: 1350 m.

Keys at Chamaecrista and listing in Checklist of Nepal lead me to Chamaecrista mimosoides (Leaflets usually in 30-60 pairs) and Chamaecrista leschenaultiana (DC.) Degener
Pl. check. 

Catalogue of life also gives distribution of Chamaecrista nomame in Nepal.
Pl. check.  

As leaflets are less than 30 and Chamaecrista leschenaultiana (DC.) Degener looks different.
Pl. check for Chamaecrista nomame

I think looks different from Chamaecrista nomame as per
Also looks different from Chamaecrista leschenaultiana as per details herein and as per GBIF
Checklist of Nepal lists the following:
Surprisingly, ILDIS lists Cassia mimosoides ssp. leschenaultiana (DC.) H.Ohashi both under Chamaecrista nictitans (L.) Moench (with distribution in Nepal) and also under Chamaecrista leschenaultiana (DC.) Degener with no distribution in Nepal.
Your post may be closer to Chamaecrista nictitans (L.) Moench (with distribution in Nepal) as per