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The 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 200 documented accessions carry no coordinates yet and cannot be mapped.

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555Accessions shown

41Growing areas represented

15Growing regions represented

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33%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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Featured accessionDobremez 2536 (1974)

Nepal Collected 1974 Herbarium specimen

Dobremez 2536 is a herbarium accession of Cannabis sativa collected in abandoned fields in western Nepal at 500 metres on 15 April 1974 by Jean-François Dobremez, with Narayan Prasad Manandhar. The place-name on the label is handwritten and is read here as Bheri. The Royal Botanic Garden Edinburgh holds the sheet as E00751458.

CollectionHerbarium specimenHistorical

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Places

Featured growing regions and areas

Growing region

Northeastern Thailand

Mekong Basin

Khorat Plateau cultivation zone shaped by Mekong tributaries, monsoonal rice agriculture, and long-standing Lao-Isan cultural continuity

Jalpaiguri

North Bengal Plains

Ketama

Rif Mountains

Khairbari-Deogaon

The Dooars

Kirivong

Southern Cambodia

All 15 growing regions · All 45 growing areas

Featured article

Schets van het eiland Sumatra ("Sketch of the island of Sumatra") is a 137-page geographical and ethnographic description of Sumatra by the Dutch orientalist and geographer P. J. Veth, published at Amsterdam by P. N. van Kampen in 1867 as an offprint, "not for sale" (niet in den handel), of the Sumatra entry of Veth's Aardrijkskundig en Statistisch Woordenboek van Nederlandsch Indië. It treats the island's geography, geology, climate, products, peoples, history and administration in the order of a gazetteer article. A single sentence on p. 41, in the survey of the island's plant products, records that the inhabitants cultivated hemp (ganja) not for its fibre but to prepare an intoxicant called bang, which they smoked with tobacco.

As a compilation made in the Netherlands from official and travellers' reports rather than from the author's own observation, the Schets is evidence of what the colonial reading public of the 1860s was told about Sumatra as much as of the island itself and its remarks on "de inlanders" (the natives) carry the framing of the sources it condensed. Modern readers use it in that double light: as a mid-19th-century Dutch witness to cannabis use on Sumatra and as a text whose statements need to be traced to the reports behind them.

The book's own terms are hennep and ganja; where the wiki paraphrases it, cannabis is used. 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