Mitragyna speciosa

Kratom, a reference photo
Photo: Uomo vitruviano · CC BY-SA 3.0 (licence)

Mitragyna speciosa is a tropical evergreen tree of the Rubiaceae family native to Southeast Asia. It is indigenous to Cambodia, Thailand, Indonesia, Malaysia, Myanmar, and Papua New Guinea, where its dark green, glossy leaves, known as kratom, have been used in herbal medicine since at least the 19th century. They have also historically been consumed via chewing, smoking, and as a tea. Kratom contains multiple alkaloids (primarily, mitragynine and to a lesser extent, 7-hydroxymitragynine) that bind to opioid receptors, mostly as a partial agonist of the μ-opioid receptor.

From Wikipedia, under CC BY-SA 4.0.

Is it poisonous?

We have no record of Kratom being toxic, poisonous or venomous. That is not proof that it is safe. Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

Classification

Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Gentianales
Family
Rubiaceae
Species
Mitragyna speciosa

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