- Fungi Including Lichens
- ›Ascomycete Fungi
- ›Sac Fungi and Lichens
- ›Common Lichens
- ›Shield Lichens, Sunburst Lichens, Rosette Lichens, and Allies
- ›Lecideales
- ›Lecideaceae

Cecidonia
Cecidonia is a genus of lichenicolous (lichen-dwelling) fungi in the family Lecideaceae. It has two species. These fungi create distinctive white, warty swellings or galls up to 6 mm across on the surface of their rock-dwelling lichen hosts, which then develop small black fruiting bodies. The genus name refers to this gall-forming behaviour, and the two species primarily attack crustose lichens that grow on siliceous rocks.
2 branches of this genus, most-observed first
See this branch on the Wheel of Life →Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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In the stacks
Searching the stacks…
Every page naming Cecidonia in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 175977.

