Broad Leaflet Morphology

Broad leaflet morphology refers to cannabis plants displaying wider, more expansive leaf blade structures compared to narrow-leaflet phenotypes. This classification encompasses plants with leaflets typically measuring wider in proportion to their length, often associated with indica-type genetics and certain sativa-dominant hybrids. Broad-leaflet plants are commonly documented in Central Asian and Hindu Kush landraces, though the trait appears across many modern cultivars regardless of geographical origin. The morphological distinction is primarily phenotypic and influenced by both genotype and environmental factors during vegetative growth. Breeders and cultivators recognize broad leaflets as a useful visual marker for plant classification and selective breeding programs, though leaf shape alone does not determine cannabinoid or terpene profiles.

Breeders working with broad-leaflet genetics often leverage this morphology as a selection criterion when stabilizing hybrid lines or maintaining landrace populations. The trait serves as a visual descriptor in breeding records and helps breeders track lineage consistency across generations, particularly when crossing broad-leaflet accessions with narrow-leaflet parents to document segregation pat