fascicle sheath

Fascicled flowers of Butea monosperma, (Flame of the forest)

Details of fasciculation of florets in an inflorescence of a Sansevieria species

In botany, a fascicle is a bundle of leaves or flowers growing crowded together; alternatively the term might refer to the vascular tissues that supply such an organ with nutrients. However, vascular tissues may occur in fascicles even when the organs they supply are not fascicled. In zoology and animal anatomy the term fascicle refers to a small bundle, usually of fibres, nerves, or vessels.