Keys as per Flora of Mizoram:



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Helicia excelsa (Roxb.) Bl. (Assam to W. Malesia: Andaman Is., Assam, Bangladesh, Borneo, Cambodia, Laos, Malaya, Myanmar, Nicobar Is., Sumatera, Thailand, Vietnam as per POWO)

  


Helicia nilagirica Bedd. (China (Yunnan), Bhutan, Sikkim, Cambodia, India, Laos, Thailand, Vietnam, Myanmar [Burma] (Chin, Kachin, Mandalay, Shan, Yangon, Sagaing), Nepal, Bangladesh as Catalogue of life)

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Species with distribution in annotated checklist of Flowering plants of Nepal (Distribution):
Helicia nilagirica Bedd. (450-1400 m; E. Himalaya (Nepal to Bhutan), India, Burma, Thailand, Indo-China, S.W. China (Yunnan))


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Some species found in Indian Subcontinent with description & keys from Flora of China [Distribution other than China]:
Helicia nilagirica Beddome [Bhutan, Cambodia, India, Laos, Myanmar, Nepal, Sikkim, Thailand, Vietnam].