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17-03-2026 10:09

François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

17-03-2026 10:40

Martine  Vandeplanque Martine Vandeplanque

Bonjour à tous.Chaque année en mars ou avril, il

12-03-2026 19:44

Enrique Rubio Enrique Rubio

Hi to everybody.Can you give me any suggestions ab

05-03-2026 10:07

Hulda Caroline Holte

Hello, I found and collected this species growing

12-03-2026 15:45

Åge Oterhals

Dear forum,I found this small discomycete on a ver

12-03-2026 16:17

Sylvie Le Goff

Bonjour à tousRécolté dans le 22 en France (ré

11-03-2026 17:36

Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

14-03-2026 13:51

Thierry Blondelle Thierry Blondelle

Hi everybody Under Quercus ilex, i hesitate to na

08-03-2026 14:05

Thierry Blondelle Thierry Blondelle

Bonjour à tous,Sur 3 récoltes supposées de H. l

12-03-2026 14:37

David Wasilewski

These small ascomycota (1-3 mm) ere observed growi

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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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