Nettle Pox - Calloria tremelloides
Callorina fusarioides
Cylindrocolla urticae (asexual stage)
The sexual stage is a very small (< 1mm) orange disc or lens shaped fungus with a paler margin, found in clusters on dead nettle stems. The asexual stage is more often recorded, and precedes the sexual stage. This asexual stage is poorly defined and cushion-shaped, ofen coalescing, and is a darker orange. It produces chains of cylindrical conidia.
Photograph on host plant; note substrate and associated plant species; note whether you are recording sexual or asexual stage, or both
Dead stems of nettle
martindgrimes
Pickworth Drift
10 March 2022
asexual stage
Peter Smith
Cropston, Slate Bridge
12 April 2022
sexual stage
martindgrimes
Barnsdale Wood
07 April 2016
martindgrimes
Pickworth Drift
10 March 2022
Melinda Bell
Shepshed,field border near Jubilee Walk
12 February 2025
chains of conidia (Cotton blue stain)
Melinda Bell
Shepshed,field border near Jubilee Walk
12 February 2025
Asexual stage; in dry state on nettle stem
Peter Smith
Cropston, Slate Bridge
12 April 2022
Peter Smith
Cropston, Slate Bridge
12 April 2022
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Species profile
- Common names
- Nettle Pox
- Species group:
- fungus
- Kingdom:
- Fungi
- Order:
- Helotiales
- Family:
- Calloriaceae
- Records on NatureSpot:
- 39
- First record:
- 07/07/2013 (Thompson, Peter)
- Last record:
- 03/05/2025 (lemmon, roy)
Total records by month
% of records within its species group
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Latest images
Latest records
Melinda Bell
Shepshed,field border near Jubilee Walk
12 February 2025
hydrated with water drop
