Soredium

[1] Lichens reproduce asexually by employing simple fragmentation and production of soredia and isidia.

[2] Soredia are powdery propagules composed of fungal hyphae wrapped around cyanobacteria or green algae.

[1] These can be either scattered diffusely across the surface of the lichen's thallus, or produced in localized structures called soralia.

[3] Fungal hyphae make up the basic body structure of a lichen.

[2] The soredia are released through openings in the upper cortex of the lichen structure.