STAR LABA classification helps describe a structure. It does not certify its chemistry.
What is new, and when?
Shtein and Bernstein’s study appeared on 31 October 2026, after acceptance on 20 October. The publisher labels it peer-reviewed research in press, awaiting final editing—not a preprint. It examined unfertilized female plants of one cultivar, NB120, using microscopy, elemental analysis and cannabinoid measurements. The anatomy and cannabinoid comparisons used five plants; this is not a five-cultivar survey. [1]
Four proposed groups
The authors propose two glandular groups, capitate and bulbous, and two non-glandular groups, cystolith and pointed. They report calcium and silicon mineralization in pointed hairs on flower bracts. Long-stalked glands were prominent on flowers and sugar-leaf margins but absent from the fan leaves examined. Organ-level THC and CBD measurements accompanied these structural differences. [1]
Where the evidence stops
This is a proposed framework, not an adopted universal standard. The authors call for testing across more genotypes and developmental research. Organ-level associations do not establish the contents of every individual gland, clinical effects or finished-product purity. [1]
How we would use the terminology
POSH STAR editorial interpretation: retain each paper’s own labels when comparing studies. A useful reading note records the named structure, the plant organ, the classification used and whether the claim comes from an image or a chemical measurement. Do not silently convert older labels into the new groups.
For example, “trichomes visible” is an incomplete comparison if one caption concerns non-glandular hairs and another concerns glands. The first question should be what was counted—not which image looks more impressive.
NIST’s official measurement programme addresses comparability through analytical methods, reference materials and interlaboratory studies. Its page was updated on 15 September 2026. These tools concern measurement quality; the programme does not endorse this botanical classification. [2]
Read this note alongside our introductory trichome guide and microscopy-artifact note.
Sources & further reading
- Shtein & Bernstein — A complex story of trichome types and chemistry in Cannabis vegetative and reproductive organs. Published 31 October 2026; accepted article in press.
- NIST — Tools for cannabis laboratory quality assurance
Research findings and public-agency definitions are attributed above. Reading checklists are editorial guidance, not laboratory findings.