Radula marginata

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Radula marginata
Scientific classification
Kingdom: Plantae
Division: Marchantiophyta
Class: Jungermanniopsida
Order: Jungermanniales
Family: Radulaceae
Genus: Radula
Species: R. marginata
Binomial name
Radula marginata

Radula marginata (Wairuakohu) is a species of plant in genus Radula, a genus of liverworts. It is endemic to New Zealand.[1][2] It has been found to contain cannabinoids.[3]


Users smoking the plant have experienced different effects.[4][citation needed] The cannabinoid is not THC, the main psychoactive chemical in cannabis, but it is of similar molecular structure.[3] The liverwort contains perrottetinene and perrottetinenic acid.[3] The quantity of cannabinoid present is much less than in cannabis.

Legal status[edit]

The liverwort grows as a common weed.[citation needed] Owning, growing and distributing the liverwort is legal.

Radula marginata has a long history of traditional use as a rongoā (Māori herbal medicine),[5] and is a taonga of the Māori people of New Zealand, so any attempt to prohibit its use would be a breach of the Treaty of Waitangi .[citation needed]