# Indusium

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

- any covering of a [sorus](https://eflora.sydney.edu.au/glossary/sorus "a group of sporangia on the fronds of ferns.") whether a modified organ or merely the [incurved](https://eflora.sydney.edu.au/glossary/incurved "bending or curved inwards or upwards.") margin of the [pinna](https://eflora.sydney.edu.au/glossary/pinna "the primary segments of a divided leaf lamina or of a larger pinna.");
- the [pollen](https://eflora.sydney.edu.au/glossary/pollen "the male fertilizing element of seed plants.")-cup of Goodeniaceae.

## Related terms

- [Exindusiate](https://eflora.sydney.edu.au/glossary/exindusiate)
- [Sorus](https://eflora.sydney.edu.au/glossary/sorus)

- [Indusium](https://eflora.sydney.edu.au/glossary/image/indusium "Goodeniaceae: Indusia of (a) Dampiera stricta, (b) Goodenia stelligera.")