Acorus Calamus Linn
- Common name: Sweet Flag (English), Mitha Bach (Hindi)
- Vernacular name: Bach (Assamese), Ghorabach (Bengali), Vasa (Kannada) and Okhidak (Manipuri)
- Family:Acoraceae
- Habits: Herbaceous Perennial
- Habitat:found in moist places near riversides and rice fields
- Flower: May-June
- Part used :Roots, rhizomes, leaves and stems
- Distribution: Manipur, Meghalaya, Arunachal Pradesh, Sikkim and Himachal Pradesh
Uses: Used for stimulation of brain and nervous system, appetite, fever, stomach cramps