Sotthi or Zedoary (Curcuma zedoaria, family: Zingiberaceae) is a perennial herb with underground tubers. It is native to South and Southeast Asia.
Common names: Zedoary, White turmeric.
Leaves arise from the tubers. Leaves are glabrous, 1-2 m long, narrow at the petiole.
Inflorescence is about 50 cm long. Flowers are yellow, white and violet mixed, surrounded by greenish and reddish bract. Flower blooms in spring and summer.
Its rhizome is used to prepare medicine for fever, diarrhoea, worm, tumour and enlargement of the spleen.
Propagation is caused by the division of tubers. It is found in rural areas and Shala-forests of Bangladesh.