Knowledge of the proper name for each part of the Cannabis plant can help one describe problems with a cultivar
Leaves
Types of leaf
Cotyledons
Technically not actually leaves, these are the initial pair of "leaves" that are present inside the seed casing
Sugar leaves
Small leaves with trichomes that grow from the buds. They are trimmed before the bud is smoked, either before or after drying.
Fan leaves
The largest leaves on the plant dedicated to photosynthesis. In a healthy plant, the fan leaves will have up 7 or even 9 fingers
Parts of the leaf
Petiole (leaf stem)
Apex
The pointed tip of a fan leaf
Ventral surface
Dorsal surface
Margin
Stomata
Stomata are tiny pores in the plant tissue that allow for gas exchange. The majority can be found on the underside of the leaves but they are also found on the stems.
Buds
Cola
A cluster of many buds on the top of a stem. Colas will appear and become larger throughout the flowering stage
Trichromes
Trichomes are resin filled glands that appear on the sugar leaves and buds of Cannabis in the flowering stage. They contain THC, CBD, and other cannabinoids. They first appear on the plant as a translucent colour but slowly turn milky white as the plant matures. The opacity indicates the amount of THC in the trichrome. As flowering continues the milky white colour turns to amber as the THC converts into CBD.
Terpenes
Organic compounds found in the highest concentration in buds that create the taste and aroma.
Calyx
Plant body
Node
Points on the steam where lateral branches grow from the main stem. The third node is where the plant begins to develop strong bud producing branches