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Talk:Dwarf and semidwarf Cannabis

Discussion page of Dwarf and semidwarf Cannabis
Talk

Use this page for verification notes, disputes, and action items. Keep narrative content on the article.

Page scope
Dwarf and semidwarf Cannabis covers short stature in Cannabis: what "dwarf" and "semidwarf" mean in the genus, the three causes of a short plant (growing conditions, inherited architecture, early flowering), and the labels, reports and seed lines from the eastern Himalaya and its foothills that use the words. The day-neutral habit has its own page at Autoflowering, and environmental variation in general at Phenotypic plasticity.
Data verification
Record source conflicts, dating problems and sources not used here. Keep narrative content on the article.

Discussion

Sources and how they were read

Small (2018), McPartland and Small (2020), Sharma (1979), de Meijer's thesis (1994), Schultes and colleagues (1974) and the journal papers on flowering and height were read in full. The Indian Hemp Drugs Commission passages were read in the volume I report and the volume IV evidence; the headings of witnesses 82 and 193 were checked on the page images. The herbarium labels are quoted from the sheet images, through the accession pages linked in the article. The seed-company statements are quoted from the live listings and posts as they stood on 7 October 2026, and the genebank passports from the GRIN-Global accession pages on the same date. In the G 33714 passport the plants "of less than 30cm height" grew on a tributary of the Karnali farther along the route than the guesthouse where the donor obtained the seed. The article gives that lot's five 2024 trial heights; the passport also lists a value of 201.02 from a 2025 study (2025-PATH-PGRU). G 33754 has one plant-height value, from the 2024 New York trial. Of the 22 GRIN lots from Nepal and India with a value from that trial, it has the lowest (148.29); the next lowest is G 33725 (209.63) and the highest G 33724 (285.67).

Where the sources disagree

  • Size of the ruderal form. Schultes and colleagues (1974) give C. ruderalis as normally up to two feet; McPartland (2018) reports that Janischevsky's 1924 plants reached 2.1 m. Janischevsky's paper itself was not obtained, so his figure is given as McPartland reports it.
  • Origin of the Nepali Highland type. The vendor's posts place it in Nepal (August 2024), in the Terai and the subtropical hills of Nepal and north-eastern India (September 2024) and, citing unidentified genomic analysis and eradication videos, in eastern Bengal (December 2025). The listings date the seed to the 2024 harvest, while the posts give collection years of 2021 and 2022. The donor note on the 2026 genebank lots describes a bazaar purchase of unknown origin. The accounts are set out side by side in the article, and none is preferred.
  • Nepalese Mountain Ganja. The listing quotes a cultivator for whom half the plants were "semidwarf", and gives the line a height of up to about 4 m; the genebank curators recorded the same lot among the tallest of the 2024 New York trials. The cultivator's grow is undated and unlocated.
  • Units of the trial heights. The GRIN pages print the plant-height values (descriptor HT) without a unit. The USDA hemp descriptors handbook defines HT in centimetres, from the ground to the tip of the apical inflorescence, and the article gives the values in centimetres on that basis. They were measured about 100 days after sowing, not at maturity.

Not used

  • Grower reports on internet forums of Nepali Highland plants of about 6 to 8 feet: forum posts are not citable here.
  • Seed listings from other vendors for Nepali and Bhutanese lines: they describe tall plants, but they are catalogue text and add nothing the cited listings do not.
  • de Meijer and colleagues (1992), Euphytica 62: the paper itself was not read, and the thesis chapter that revises it is cited instead.
  • The G 33754 curator note that the plants are "approximately 1 Yousoon tall": the unit is not defined. The same passport's donor notes on where the Pokhara type came from (a ganja type of regions such as the Terai; later, "the Bengal (Bangladesh) region") are not used, because the article gives the vendor's own accounts of the Nepali Highland type.
  • Clarke (2007) on cannabis in Darchula District, the district of Ikeda 1217005, was not obtained.
  • Cherniak (1982), on whom McPartland and Small rely for the 1970s introductions into Nepal, was not obtained; the statement is given as theirs.
  • Preprints and abstracts on the genetics of day-neutral flowering beyond Toth and colleagues (2022) were not cited until their published texts are read.

Images reserved in the article

One image has a place in the article but is not yet uploaded. Its file link is kept hidden in the page source and can be restored once the file exists:

  • File:Nepali-cannabis-lots-2024-trial-heights.png (Explanations), a bar chart to be drawn: plant height in centimetres (axis 0 to 350) for two Nepali seed lots in the 2024 US trials, one bar per trial site, grouped by lot. GRIN G 33714 (Humla Jungli), five sites: 190, 231, 272.03, 278.13 and 308.5 cm. GRIN G 33749 (Nepalese Mountain Ganja), six sites: 143, 185, 281.71, 283.2, 290.83 and 310 cm. A note under the axis that the heights are site means taken about 100 days after sowing. No field bars: neither passport gives a field height for its lot.