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Landrace.wiki

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 152 documented accessions carry no coordinates yet and cannot be mapped.

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Interactive map of documented accessions. It is unavailable here; browse the accession list instead.

486Accessions shown

40Growing areas represented

15Growing regions represented

Conservation priority

38%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 accessionRSC-LAO-UNK-0120230001

Laos Collected 2023 Landrace Medium priority

Mango Thai General Population 2023 is a landrace cannabis accession from Laos, listed as Mango Thai in the seed catalogue of The Real Seed Company (RSC). RSC classifies it as a traditional Lao-Thai cannabis landrace cultivated for ganja.

PopulationGeneral populationShort-day

Recorded usesRecreation

CollectionSeedsPoint of Origin

PreservationThe Real Seed Company

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Places

Featured growing regions and areas

Growing region

Eastern Himalayas

Himalayas

Monsoon-fed Himalayan cultivation zone spanning the eastern arc from Darjeeling–Sikkim into Arunachal uplands

Khairbari-Deogaon

The Dooars

Kirivong

Southern Cambodia

Koch Bihar

North Bengal Plains

Kullu

Western Himalayas

All 15 growing regions · All 43 growing areas

Featured article

Cannabis taxonomy is the classification of plants in the genus Cannabis within the family Cannabaceae. The taxonomy of the genus has been disputed since the eighteenth century and remains unresolved. Three principal treatments coexist in the modern literature: a monotypic concept in which the genus contains a single polymorphic species, Cannabis sativa L.; a two-species concept in which Cannabis indica Lam. is treated as a separate species; and a three-species concept in which a further species, Cannabis ruderalis Janisch., is also recognised.

The dispute is further compounded by a vernacular nomenclature, drawn from the late-twentieth-century drug trade, in which the labels "Sativa" and "Indica" came to be applied to plants in ways that do not correspond to the formal scientific epithets of the same names. McPartland and Guy described this divergence in 2017, after a survey of herbarium specimens and primary descriptions and showed that the vernacular and formal taxonomies refer to substantially different sets of plants.

Forty years of intentional hybridisation between drug-type populations from different geographic origins, combined with prohibition-era barriers to systematic study, has left the taxonomy of the modern commercial accession landscape only loosely resolved. Conservation taxonomy of pre-hybridisation source populations is a distinct and active line of work, most fully developed in the four-variety treatment of landrace populations proposed by McPartland and Small in 2020. 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