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26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

25-03-2024 14:08

Ursula Kozik

Bonjour et bonne journée, On m'a envoyé une tro

25-03-2024 03:56

B Shelbourne B Shelbourne

• Scuttelinia: Macro and habitat.• S. scutella

25-03-2024 20:21

DAVID MARCOS DAVID MARCOS

Bonjour, je m'appelle David et je débute dans l'i

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Tympanis conspersus ?
Ethan Crenson, 11-11-2019 05:13
Found recently in a New York City park. It appears to be a Tympanis sp., erumpent through fissues in the bark of a hardwood branch (possibly Quercus or Liriodendron tulipifera). The fertile surface is black and the margin and outer surface is pruinose with powdery granules. Asci measure approximately 103-162 x 15-25µm. The contents of the asci are very confusing, ranging from tiny granules to larger globose forms and other blobs. I thought I detected some hyaline allantoid spores with oil droplets at the ends, but I'm not sure they belong to this collection. They measured 3-4 x 1-1.5µm. Is it possible that this is Tympanis conspersus?
Thank you in advance.
Ethan
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Hans-Otto Baral, 11-11-2019 09:38
Hans-Otto Baral
Re : Tympanis conspersus ?
My impression is that the population is immature. perhaps you can riped it a bit? Important is to see the ascospores inside the asci and how the ascoconidia are formed on them when the asci are still alive.
The white powder on the exterior consists of crystals, presumably calcium oxalate, typical of T. alni (former conspersa) and some others.
Zotto