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18-12-2025 17:23

Bruno Coué Bruno Coué

Bonjour,je serais heureux d'avoir votre avis sur c

18-12-2025 18:07

Margot en Geert Vullings

These plumes were found on rotten wood.They strong

17-12-2025 18:35

Michel Hairaud Michel Hairaud

Bonjour à tous/Hi to everyone I am passing along

21-11-2025 10:47

François Freléchoux François Freléchoux

Bonjour,Peut-être Mollisia palustris ?Trouvée su

15-12-2025 15:48

Danny Newman Danny Newman

Melanospora cf. lagenaria on old, rotting, fallen

15-12-2025 15:54

Johan Boonefaes Johan Boonefaes

Unknown anamorph found on the ground in coastal sa

15-12-2025 21:11

Hardware Tony Hardware Tony

Small clavate hairs, negative croziers and IKI bb

15-12-2025 21:47

Pol Debaenst

Good evening, On 12/11/2025 I found ascomycetes w

15-12-2025 07:05

Danny Newman Danny Newman

Pseudosclerococcum golindoi (det: Zotto)near Cosb

15-12-2025 12:34

Danny Newman Danny Newman

indet. Rhytismataceae on oak leafnear Purchase Roa

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Cryptosphaerella?
Stefan Jakobsson, 17-03-2024 20:58
For a few days we had temperatures above freezing point here in southern Finland. I then collected some twigs, which during the winter had fallen from the canopies of Quercus robur.

On the surface of one of these twigs I noticed a conical structure reminding of some gelatinous colourless heterobasidiomycete. However, under the microscope it was clearly a pyrenomycete with polysporous asci on a long pedicel. The clavate part of the asci is about 53-58 × 17-21 µm, IKI-. The gelatinous structure is clearly a Quellkörper about 430(?) x 290 µm. No paraphyses seen. The spores are allantoid, 9.8-12.0 × 2.4-2.8 µm, with one or a few guttules at each end, no septa.


The ascoma is about 600 µm diam, covered with a dark tomentum, immersed, only the Quellkörper visible above the surface. In the macro photo a second ascoma has been dug up from the cortex.


With the keys of Mugambi & Huhndorf (2010) this easily keys out as Cryptosphaerella celata (now perhaps Neocryptosphaerella c.). This is, however, a species known from only one locality in Kenya. The distance from a tropical highland forest to the snow and ice of southern Finland feels very long. Where did I go wrong, or what should I think about this one?

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