Trichomes Glandular Bulbous

Glandular bulbous trichomes are resin-producing structures characterized by a large, bulbous head resting on a thin stalk or peduncle. These macro-glands are among the most visible trichome types and are commonly examined under magnification for cannabinoid and terpene content assessment. Bulbous trichomes develop across calyx, leaf, and occasionally stem surfaces, with head diameter often exceeding 100 micrometers. Lineage records frequently report glandular bulbous prominence as a stable phenotypic trait within indica-dominant and hybrid lineages. Breeders select for bulbous trichome density as a visual marker of resin production potential, though trichome morphology alone does not predict chemical profiles.

Breeders working in phenotype stabilization often use glandular bulbous trichome density as a selection criterion for consistency across generations. This classification helps distinguish resin-heavy phenotypes and supports visual quality assessment during clone or seed line curation.