What is fragrant cane?

Fragrant Cane

Keneh bosem in Hebrew. Ancient sources identify this with the sweet calmus (Septuagint; Rambam on Kerithoth 1:1; Saadia; Ibn Janach). This is the sweetflag or flag-root, Acoras calamuswhich grows in Europe. It appears that a similar species grew in the Holy Land, in the Hula region in ancient times (Theophrastus, History of Plants 9:7). Other sources apparently indicate that it was the Indian plant, Cympopogan martini, which has the form of red straw (Yad, Kley HaMikdash 1:3). On the basis of cognate pronunciation and Septuagint readings, some identify Keneh bosem with the English and Greek cannabis, the hemp plant.