A small cup-shaped structure or epicalyx below the true calyx.

A cap-like covering, especially the hood over the capsule in mosses or the operculum in some flowers.

Having or bearing a calyptra.

The meristematic tissue that gives rise to the root cap in plants.

The outermost whorl of floral organs, composed of sepals, typically protecting the flower bud.

The free, projecting part of a fused calyx.

The fused, tubular portion of a gamosepalous calyx.

The lateral meristem responsible for secondary growth, producing xylem inward and phloem outward.

Bell-shaped, referring to flower corollas or other structures.

An ovule that is curved so both micropyle and chalaza are near each other.