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A neutral, independent encyclopedia and open conservation database for landrace cannabis populations, their genetics and the traditional knowledge that sustains them.

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Filter by collection year, classification, priority or provenance, and select a marker for accession details. Every figure on this card describes the accessions currently shown. A further 52 documented accessions carry no coordinates yet and cannot be mapped.

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413Accessions shown

40Growing areas represented

15Growing regions represented

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40%of the accessions shown are assessed as critical or high conservation priority. Help document them

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An accession is a sample or observation recorded at a specific place and time. An appellation is a locally recognised name tied to place and tradition.

All accessionsEvery documented sample and observation

ClassificationLandrace, feral, specimen and related accession types

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Growing regionA broad ecological and cultural grouping

Growing areaA specific cultivation zone within a region

AppellationA recognised name tied to place and tradition

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Featured accessionVerschueren 426 (1913)

Democratic Republic of the Congo Collected 1913 Herbarium specimen

Verschueren 426 is an accession record for a pressed herbarium specimen of Cannabis sativa collected at Banana, at the mouth of the Congo River in what is now Kongo Central in the Democratic Republic of the Congo and was then the Belgian Congo, in April 1913 by R. Verschueren. Meise Botanic Garden holds the sheet as catalogue BR0000014662645. GBIF publishes the gathering as preserved specimen occurrence 1839971772.

CollectionHerbarium specimenHistorical

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Places

Featured growing regions and areas

Growing region

Southern Cambodia

Mekong Basin

Major landrace cannabis cultivation region spanning Cambodia's southern provinces, from the Cardamom Mountains to the Vietnamese border

Chamurchi-Laxmi Duar

The Dooars

Chapramari

The Dooars

Gorumara

The Dooars

Jaldapara

The Dooars

All 15 growing regions · All 43 growing areas

Featured article

Phenotypic plasticity is the capacity of a single cannabis genotype to produce different phenotypes in different environments. It is a large part of why Cannabis is so variable: much of the difference in height, form, flowering and chemistry between plants reflects the growing environment as well as inherited differences. Because the same genotype can look and yield differently from one site or season to the next, a plant's field appearance is an unreliable guide to its genetic makeup, which matters for how landraces are described, compared and conserved.

Plasticity is measured by growing the same genotypes across several environments and partitioning the variation into genetic, environmental and interaction components. The interaction term, genotype-by-environment interaction, captures the plastic response: how far genotypes rank or behave differently depending on where they are grown. read more →

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Research

Venue: Health Research Policy and Systems

7 Sep 2026

Knowledge translation and evidence use in medicinal cannabis policy: An evidence brief on regulation, effectiveness, safety and stakeholder support in Colombia

A knowledge-translation study from the Unit of Evidence and Deliberation for Decision Making at the University of Antioquia in Medellín, reporting how an evidence brief on the regulation, effectiveness, safety and stakeholder support of medicinal cannabis was assembled and put before Colombia's Ministry of Health. Its interest for the corpus is procedural rather than botanical: it documents how research evidence and stakeholder opinion were marshalled into a national cannabis regulatory process, in a producer country whose policy record the wiki otherwise holds through enforcement reporting.

Source

18 Jul 2026 · Journal of Cannabis Research

Terroir-driven phenolic chemotypes and antioxidant/antimicrobial activities of Beldia (Cannabis sativa L.) seed extracts

Source

1 Jul 2026 · Plant Disease

Screening Diverse Cannabis sativa Germplasm for Resistance to Golovinomyces ambrosiae

Source

30 Jun 2026 · Acta Theologica

Cannabis Sativa, religion and society: Historical, medicinal, legal, and sacramental perspectives

Source

28 Jun 2026 · International Journal of Drug Policy

Value capture in the emerging medical cannabis global value chain: insights from South Africa