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21-04-2026 13:36

Gernot Friebes

Hi,I am out of ideas for this one. I collected Sal

21-04-2026 13:19

Gernot Friebes

Hi,this Lophodermium on Typha has ascospores measu

21-04-2026 13:05

Gernot Friebes

Hi,this hyphomycete feels familiar but I was not a

20-04-2026 22:00

Malcolm  Greaves Malcolm Greaves

These pale yellow, hairy ascos were growing on cul

19-04-2026 21:23

Steve Clements

Bonjour, I found this anamorphic fungus on old pl

19-04-2026 20:46

Steve Clements

1 mm diameter approx spherical conidiophores on pl

12-04-2026 17:56

Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

17-04-2026 19:16

Enrique Rubio Enrique Rubio

Hi to everybodyI would appreciate any assistance r

14-04-2026 05:32

Ethan Crenson

Hi all, A few weeks back a friend pointed out som

17-04-2026 15:14

Bruno Coué Bruno Coué

Bonjour.Récoltes du 16/04/2026, sur feuilles mort

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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