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30-07-2025 10:12

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

29-07-2025 18:59

Castillo Joseba Castillo Joseba

Me mandan el  material seco de Galicia, España,

28-07-2025 12:34

Enrique Rubio Enrique Rubio

Hi to everybody.I would appreciate any ideas about

28-07-2025 04:59

Richard Droker

Growing on resin (over moss on Tsuga heterophyll)l

13-06-2025 09:41

Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

13-06-2025 16:34

Andgelo Mombert Andgelo Mombert

Bonjour,Un petit discomycète qui me résiste. Il

24-07-2025 19:02

Castillo Joseba Castillo Joseba

De esta mañana en tronco caido de Haya A ver si

21-07-2025 19:22

Ethan Crenson

Hello all,  Here is an Orbilia found by a friend

14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

18-07-2025 23:03

Josep Torres Josep Torres

Hello.Fruitings between 51 and 130 microns in tota

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Octospora
Charles Aron, 01-06-2025 09:37
Charles AronHi All, 

I found this Octospora growing with liverworts and mosses while gardening. In the Octospora.de website it seems to agree closest with megapolitana but it is on clayey rather than sandy soil andthe paraphyses are not hooked. 

Octospora cf megapolitana, Refail Fields, Pentraeth, Anglesey, 4/4/25 & 6/4/25
Apothecia solitary to gregarious, margin finely downy when young. Pinkish to orange. On rather compacted, clayey soil with liverworts and mosses.
Ascospores: 22x10, 22x11, 22x10.5, 21.5x12, 24x12, 22.5x11, 22x12, 22x12, 22x12, 22x11, 22x22x11, 21x11, 23x11.5, 21x12, 24x11.5, 22x11.5, 24x12, 25x12, 20x11, 22x12, 18.5x11, 19x11, 18.5x11, 21x11, 21x12, 24.5x10.5, 23.5x12, 21x11, 21.5x12, 20.5x11, 20x12, 21x11.
18-24.5x10-12
Ascospores ellipsoid, with two guttules. With evenly spaced hemispherical warts 0.5 wide and high. Occasionally with short ridges.
Asci (x400): 90x5, 85x6, 77x5, 83x7, 80x6, 103x7, 96x6, 90x7.5, 81x6, 84x8, 95x7, 74x6.5, 75x6.5, 70x7, 69x8, 71x7.5 175-240x12.5-20
Paraphyses: 7, 5, 5, 6, 6, 7, 6, 6, 7, 8, 7, 8 8, 12. Straight to curved, septate. Filled with pale yellow guttules towards the apex.
Excipular hyphae: Densely packed, with pale orange contents. Apices with amorphous substance.
Fine excipular hairs up to about 100x10.

Best wishes, 

Charles.
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Hans-Otto Baral, 01-06-2025 11:02
Hans-Otto Baral
Re : Octospora
Not sure how much O. bridei may vary, it reminds me of that.
Charles Aron, 01-06-2025 15:50
Charles Aron
Re : Octospora
Hi Zotto, 

Many thanks for your suggestion. O. bridei differs in having amazing, lemon-shaped spores. I should have mentioned that O. fissidentis also comes close and grows on clayey, shady spots like this taxon. It also has pinkish tones but doesn't appear to have excipular hairs. 

Charles.
Hans-Otto Baral, 01-06-2025 16:59
Hans-Otto Baral
Re : Octospora
Yes, yours are only fusoid, I also noticed that.
Charles Aron, 02-06-2025 21:00
Charles Aron
Re : Octospora
Hi again Zotto, 

Quite a coincidence but today I actually came across O. bridei in a damp, shady spot in Llangni, again on Anglesey. Wonderful ascospores! It may well be a new British record. 

Best wishes, 

Charles.
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Hans-Otto Baral, 02-06-2025 21:20
Hans-Otto Baral
Re : Octospora
Yes, this way I know it, and I saw it only twice.
Lukas Janosik, 16-06-2025 08:44
Lukas Janosik
Re : Octospora
Hi Charles,

Nice collection, I think this is most likely either O. fissidentis, O. ithacaensis, or some closely related undescribed species (both have paraphyses with distinct VBs and can have margin with these fine excipular hairs). There seems to be a shoot of Fissidens on your last photo but the nearby liverwort could also be the host, so verifying infection would be necessary to be sure what species it is.


Few photos of the two species are here:
https://photos.app.goo.gl/BzhdePwW9SYJ2D333
https://photos.app.goo.gl/yRsswn7jY4JxnVKh6


Best wishes,
Lukas

Charles Aron, 05-07-2025 19:01
Charles Aron
Re : Octospora
Hi Lukas, 

Many thanks for your helpful comments and info. Sorry for the delayed reply, I suppose I had more or less given up on further replies! I agree that's it's close to fissidentis, agreeing in Fb colour and ascospore ornamentation. What swayed more towards megapolitana was the larger ascospore size of this taxon but, as you say, it might be undescribed. I think I may have enough material for DNA extraction. 

Best wishes, 

Charles.
Petersen Jens H., 06-07-2025 21:07
Petersen Jens H.
Re : Octospora
Could also be Octospora ithacaensis (with liver worts around)?
Charles Aron, 07-07-2025 22:08
Charles Aron
Re : Octospora
Hi Jens, 

Thanks for your suggestion. I tend to go more with fissidentis because of the pinkish colour of the apothecia and also because they were never actually seated on the liverwort thallus. All the apothecia I found (in more than one spot in the garden) were associated with both liverworts and sparse mosses. I imagine that proving the association would be quite tricky. I'm still looking out for more apothecia but haven't found any recently. 

Best wishes, 

Charles.