Curcuma species- Mualpheng, Mizoram

Location : Mualpheng, Mizoram
Date : 03-06-2009
Habit : Herb
Habitat : Grows in grassland. Probably wild.

Is it Curcuma petiolata?

Curcuma aeruginosa ?

Curcuma zanthorrhiza; I suggest.

Pl. let me know the colour of the rhizome as there are 4-5 spp. with same type of purple patch on the leaf.