Photo: Curcuma longa.

Rhizome and leaf. The inside of the root is much more interesting: it's extremely yellow. Helsinki bot.g. (Kaisan.), Finland. Greenhouse. 2006-04-22.
Curcuma longa L. Engl.: common turmeric, turmeric, curcuma, French saffron, Indian saffron, long turmeric, yellow ginger. Deu.: Gelbwurz, Gelber Ingwer, Kurkuma. Suom.: kurkuma, maustekurkuma. Sven.: gurkmeja, gulrot, turmerik. Fran.: curcuma, safran des Indes. Bot. syn.: Amomum curcuma Jacq., Curcuma domestica Val., Curcuma viridiflora Roxb.
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Photo: Curcuma longa.