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29-11-2024 21:47

Calycina heterospora
Yanick BOULANGER

BonjourJ'avais un deuxième échantillon moins mat

27-02-2026 17:51

Parasite de Evernia Prunastri
Michel Hairaud Michel Hairaud

Bonjour, Quelqu'un peut il me donner un conseil p

27-02-2026 16:17

Sydowiella or Melanconis teleomorph on Betula
Mathias Hass Mathias Hass

Hi, Found this on Betula, rather fresh fallen twi

27-02-2026 12:56

Conidiomata on Pinus sylvestris cones
Åge Oterhals

Found on fallen cones of Pinus sylvestris in midle

27-02-2026 11:21

Nemania diffusa complex
Yannick Mourgues Yannick Mourgues

Hi to all. Here is a specie that can may be relat

26-02-2026 22:06

Geoscypha
Malcolm Greaves Malcolm Greaves

Can someone explain the features that split Geoscy

26-02-2026 15:00

En madera sin determinar
Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia, recolectada

24-02-2026 00:21

Pezizale
Benoît Segerer

Hello,I'm new to this forum, I hope I won't be irr

24-02-2026 11:01

Anamorph on Tilia
Gernot Friebes

Hi,found on a branch of Tilia, with conidia measur

23-02-2026 11:22

lasiosphaerioid on pine cone with small, slender spores - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10584971

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Unknown spore from Baltic amber
Hans Halbwachs, 16-05-2020 12:30
Dear all, I have found quite a few spores in Baltic amber. One very distinctive spore puzzles me. 
Its size is 6x15µm. I assume an ascospore, though neither in the Nordic Macromycetes (Ascomycetes) nor in the Hanlin (Illustrated Genera of Ascomycetes) I could find anything.

Can anbody help? Thank you, Hans
  • message #63238
Nicolas Schwab, 16-05-2020 16:17
Re : Unknown spore from Baltic amber
It looks like the spores of the genus Gautieria, which are basidiomycetes.
Hans Halbwachs, 16-05-2020 16:35
Re : Unknown spore from Baltic amber
You are a genius, Nicolas. I have never come across this genus before.

Many thanks, Hans

PS: Please givr me your location/credentials for the acknowledgements in my article
Nicolas Schwab, 17-05-2020 00:11
Re : Unknown spore from Baltic amber
Thank you, but that's only because I came across this genus a few times.

I think you can see all my info on my profile. E-mail me if you need anything.
Hans Halbwachs, 17-05-2020 09:11
Re : Unknown spore from Baltic amber
Thank you Nicolas, please give me the location in Switzerland, Hans
Nicolas Schwab, 19-05-2020 11:08
Re : Unknown spore from Baltic amber
I am from Renan, canton of Bern.
Ludovic Le Renard, 29-05-2020 02:32
Ludovic Le Renard
Re : Unknown spore from Baltic amber
Dear Hans,

You may want to consider the fossil genus Striadisporites. See Kalgutkar & Jansonius (2000).

The striking features of your fossil spore comprise the ridges, the pinched area at the base, and what appears like a pore facing the pinched area. The pinched base is reminiscent of hilar appendix but I am not sure that is how Nicolas interpreted this spore.

Gautieria species don't have much hilar appendix as depicted by Zeller and Dodge (1918) and a blunt bases instead, facing a rather round outline at the opposit side, and devoid of germ pore.

I don't know if more recently described species of this genus have pinched basidiospore apex but I think other genera in Boletales may also have ridges.



The overall spore shape is also reminiscent of Ascomycota in Sordariales, but I don't know anything ridged in this group.



Ludo