Kaempferia parviflora (Cultivated)

Kaempferia parviflora (commonly called Thai black ginger, Thai ginseng or Krachai Dum) is a herbaceous plant in the family Zingiberaceae, native to Thailand.^[1]
Kaempferia parviflora is a herb that has some historical and medicinal usage for treating metabolic ailments and improving vitality in Thailand and surrounding regions. It is also reported to be an aphrodisiac compound and physical enhancer. The plant is a popular male aphrodisiac in the region.^[2]
(From Wikipedia on 26.11.14)
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Place : Aizawl, Mizoram
Date : 12-11-2014
Habit : Herb
Habitat : Cultivated

I think this is Kaempferia rotunda

It is Kaempferia parviflora

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References:
POWO  The Plant List Ver.1.1  WCSP  e-monocot  Kaempferia parviflora Wall. Ex Baker (Zingiberaceae) a New Record of Medicinal Plant for India by A. A. Mao, M. Bhaumik, N. Lokho (Indian Forester Volume 137, Issue 11, November 2011) Wikipedia  Examine