Katum Nam, also known as Mitragyna Diversifolia [wikipedia], is closely related to Kratom. It is lesser known and not as available, as it lacks some of the qualities that makes Kratom interesting. Katum Nam is the less sharp, less ample between the two. Having said that, it’s still a useful leaf. Those who are tired of using Kratom as base for their incense might find Katum Nam particularly interesting.
Just as with much of our Kratom, these leaves are cultivated outside of Pontianak, Borneo. As this product is something of a rarity, the supply is limited.