# Involucre

**Source**: https://eflora.sydney.edu.au/glossary/involucre
**Parent**: https://eflora.sydney.edu.au/glossary/

- a [whorl](https://eflora.sydney.edu.au/glossary/whorl "a group of three or more appendages arising from the axis at the same level.") or several whorls of bracts surrounding an [inflorescence](https://eflora.sydney.edu.au/glossary/inflorescence "a group of flowers borne on one stem; the way in which flowers are arranged on a stem."), a [flower](https://eflora.sydney.edu.au/glossary/flower "the sexual reproductive structure of the Magnoliopsida (Angiosperms) usually consisting of gynoecium, androecium, and perianth.") or a [cone](https://eflora.sydney.edu.au/glossary/cone "a compact group of sporophylls (male or female) borne (usually spirally) on a central axis.");
- the [indusium](https://eflora.sydney.edu.au/glossary/indusium "any covering of a sorus whether a modified organ or merely the incurved margin of the pinna;") of a hymenophyllous fern.

## Related terms

- [Bract](https://eflora.sydney.edu.au/glossary/bract)