Uncaria

Uncaria scandens (Sm.) Hutch. (Assam; Bangladesh; China South-Central; China Southeast; East Himalaya; Hainan; Laos; Myanmar; Nepal; Thailand; Tibet; Vietnam; West Himalaya as per Catalogue of Life)

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BSI Flora of India Checklist Vol. 2 (Distribution):

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Flora of Peninsular India:
Uncaria sessilifructus

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Species with distribution in annotated checklist of Flowering plants of Nepal (Distribution):
Uncaria scandens (Sm.) Hutch. (700-1700 m; Himalaya (Kumaun to Sikkim), Assam, Burma, Indo-China)
Uncaria sessilifructus Roxb. (200-900 m; Himalaya (Nepal to Bhutan), Khasia, Assam, Burma, Indo-China)

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Some species found in Indian Subcontinent with description & keys from Flora of China (Distribution):
Uncaria homomalla Miquel (Evergreen to seasonal forests; 200-600 m. Guangxi, Yunnan [Bangladesh, Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, Thailand, Vietnam])
Uncaria laevigata Wallich ex G. Don (Forests; 600-1300 m. Guangxi, Taiwan, Yunnan [Bangladesh, India, Laos, Myanmar, Thailand, Vietnam])
Uncaria macrophylla Wallich in Roxburgh (On canopy crowns in secondary forests; 300-900 m. Guangdong, Guangxi, Hainan, Yunnan [Bangladesh, Bhutan, India, Laos, Myanmar, N Thailand, Vietnam])
Uncaria scandens (Smith) Hutchinson in Sargent ()Sparse forests, broad-leaved forests; 100-1500 m. Guangdong, Guangxi, Hainan, Sichuan, Xizang, Yunnan
Uncaria sessilifructus Roxburgh (Dense forests or thickets in valleys; 300-1500 m. Guangxi, Yunnan [Bangladesh, Bhutan, India, Laos, Myanmar, Nepal, Vietnam])