File:Cannabis-achenes-wild-type-and-domesticated-McPartland-Small-2020.jpg

Two achenes (fruits) of Cannabis sativa subsp. indica from herbarium specimens collected in Bengal, each photographed against a millimetre ruler and shown at the same scale.

• Left: var. himalayensis, a wild-type variety. Specimen collected by Griffith in East Bengal (now Bangladesh) in 1835, Gray Herbarium, Harvard University (GH). The achene is about 2.8 mm long and is covered by a mottled persistent perianth.
• Right: var. indica, a domesticated variety. Specimen collected by Clarke at Rajshahi (Bangladesh) in 1877, Natural History Museum, London (BM). The achene is about 4.4 mm long and has shed most of its perianth.

The lengths are read from the rulers in the photographs.

Used in Cannabis ruderalis, Feral and ruderal Cannabis, Domestication, Natural selection and Artificial selection.

• Original: McPartland JM, Small E (2020). "A classification of endangered high-THC cannabis (Cannabis sativa subsp. indica) domesticates and their wild relatives". PhytoKeys 144: 81–112, Figure 3, panels F and A, doi:10.3897/phytokeys.144.46700. Published under a Creative Commons Attribution 4.0 licence. Figure file: binary.pensoft.net/fig/390913 (1512 × 661 pixels).
• Changes: panels F and A cut from the twelve-panel figure and set side by side, F on the left, with their panel letters left in place; not rescaled, since the rulers in both panels show about 60 pixels to the millimetre in the published figure; saved as JPEG (552 × 324 pixels). No other change.
• Identification: varieties, places, collectors, years and herbaria from the figure's caption ("Representative achenes of four varieties"). The paper's identification key refers to the panels by other letters (var. indica as 3e–f, var. himalayensis as 3g–h). The caption's letters are the ones that agree with the photographs: the achenes in panels D–F are under 3.6 mm and those in A–C over it, matching the sizes the key gives for var. himalayensis and var. indica.