Botanical source	Acorus calamus L.
Botanical family	Araceae
Foreign names	racine de calamus (Fr.), Calmuswurzel (Ger.), calamo aromatico (Ital.)
Parts of plant used	roots
Harvest time	September, October, November
Manufacturing method	steam distillation

Yield	2,0 to 3,0%
Appearance	yellow to brownish-yellow liquid
Odour	characteristic
Agriculture	Conventional
Specific components	alpha-Asarone, beta-Asarone