The bracts are small, modified leaves that enclose and protect the seed in what some growers refer to as the seed pod. Each female flower has two stigmas that protrude from a single ovule, which is encapsulated by bracteoles and bracts. Stigmas are the pollen catchers. The bracts, with their dense covering of large, stalked resin glands called trichomes, contain the highest concentration of THC of any plant part. Bracts make up most of the substance and weight of high-quality cannabis buds.
Bract vs Calyx
Bracts are often mistakenly called calyxes – more on that in our dictionary entry on cannabis calyxes.