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10-05-2026 23:17

Scleromitrula (?) from decaying leaves of Fagus/Acer
Andreas Gminder Andreas Gminder

Hello,today we found in a moist steep decidous for

14-05-2026 05:36

Lachnum subvirgineum (?)
Ethan Crenson

Hi all,  I haven't paid much attention to Lachnu

16-03-2011 14:31

Peziza cf ampelina
roman vargas alberto

Hi. I would like some opinion about this Peziza

11-05-2026 12:32

Hélotiale à paraphyses à exsudat brun jaunâtre
Bernard CLESSE Bernard CLESSE

Pourriez-vous m'aider à identifier cette héloti

13-05-2026 15:26

Incrucipulum ?
François Freléchoux François Freléchoux

Bonjour,Voici une récolte faite il y a quelques j

12-05-2026 15:41

Pezizomycetes of Europe: help us to improve their knowledge
Nicolas VAN VOOREN Nicolas VAN VOOREN

Dear Ascolovers, especially interested in Pezizale

13-05-2026 12:05

Scutellinia crinita ?
Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'aimerais avoir confirmation de c

28-04-2026 20:07

Marthamycetales? - from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

27-04-2026 20:52

Mollisia or related genus from Portugal - with quite peculiar character
Lothar Krieglsteiner Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

11-05-2026 20:22

Orbilia from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

on attached twig of standing Ficus caricaquite uns

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Tarzetta betulicola?
Stefan Jakobsson, 13-06-2020 21:22
Here a Tarzetta #1 growing with Betula and some Syringa, Spiraea, Ribes and 10 m away also some modest Picea, on soil at the verge of a garden. The width is maximum 21 mm and at the base with a stipe, thin and only one or two mm visible before being covered with soil. 8-spored, no croziers. The paraphyses are cylindrical, not enlarged at apex and rarely with some nobs or somewhat enlarged at septa, regularly branched but not close to the apex. The spores are

(18.3) 18.9 - 21.2 (21.9) × (10.1) 10.7 - 11.6 (12.0) µm
Q = (1.6) 1.7 - 1.9 (2.0) ; N = 32
Me = 20.1 × 11.1 µm ; Qe = 1.8.


Could this be T. betulicola ad int.? Southern Finland.


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A week ago this had only a few mature spores but then they were of a more fusoid shape than today.

  • message #63670
  • message #63670
Stefan Jakobsson, 13-06-2020 21:24
Re : Tarzetta betulicola?
This one #2 was growing alone some five meters away from the previous ones. It is very similar to #1 but somewhat bigger, 31 mm diam., a little bit lighter in colour and the spores are slightly bigger:

(19.4) 20.2 - 22.4 (22.7) × (11.3) 11.6 - 12.95 (13.0) µm
Q = (1.5) 1.7 - 1.86 (1.9) ; N = 34
Me = 21.4 × 12.2 µm ; Qe = 1.8


I did not observe any knobs on the paraphyses. Probably the same as #1?

  • message #63671
  • message #63671
Nicolas VAN VOOREN, 20-06-2020 19:42
Nicolas VAN VOOREN
Re : Tarzetta betulicola?
Dear Stefan,
T. betulicola is a provisional name, just a hypothesis within the T. catinus/pseudocatinus complex. Your data may correspond to this "species" based on the ecology, spore shape and size. A DNA analysis is required to confirm.