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18-09-2025 08:35

Chaetomium
Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

17-09-2025 19:43

Lachnellula suecica ?
Philippe PELLICIER

Sur branche morte de Mélèze. Les ascospores sphÃ

18-09-2025 19:40

Pulvinula sp
Sylvie Le Goff

BonjourPensez vous que le genre Pulvinula puisse c

18-09-2025 16:14

Literature request
Bernard Declercq Bernard Declercq

Hello,I am looking for a copy of following paper:H

17-09-2025 16:14

Sepultaria ?
Philippe PELLICIER

Apothécies enterrées, fermées au début puis s'

17-09-2025 10:50

Ascomycete on Polystichum proliferum
Heather Merrylees

Hi there!I am hoping for any advice on the identif

11-09-2025 16:57

Marthamycetales revision published
Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

16-09-2025 12:53

Encoeliopsis rhododendri
Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

03-09-2025 12:44

Ascolichen on Blechnum?
Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

15-09-2025 14:40

Engler & Prantl, Nat. Pflanzenfam. (Ed. 2) 1938
Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for a digital copy of the seco

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Hilberina sp.
Gernot Friebes, 05-11-2015 17:47
Hi,

on my last field trip I found a few ascos which I cannot determine without your help. The first one is a Hilberina with brown ascospores (already inside the ascus) which measure about 35-42 x 3,5-4,5(5,5) µm and have mostly one septum, rarely two (three could be possible given the pattern of septation but I never observed more than two septa). Ascospore morphology seems to deviate from most of the known species in this genus...

It grows on the bast of a Fagus branch that was collected from the ground.

Help is very much appreciated!

Best wishes,
Gernot
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Andrew N. Miller, 05-11-2015 18:17
Andrew N. Miller
Re : Hilberina sp.
Hilberina breviseta or Hilberina caudata

Andy
Gernot Friebes, 06-11-2015 14:22
Re : Hilberina sp.
Hi Andy,

I had initially excluded H. breviseta because Hilber & Hilber (http://www.landesmuseum.at/pdf_frei_remote/Sydowia_36_0105-0117.pdf) describe and illustrate the ascospores with more attenuate basal parts (also overall a bit longer). Maybe this is not always the case? Other than that it seems to fit decently well.

Hilberina caudata I thought should have more sharply curved basal ends so I had excluded that one as well. Really not an easy group this...

Best wishes,
Gernot
Andrew N. Miller, 06-11-2015 14:28
Andrew N. Miller
Re : Hilberina sp.
I agree, not an easy group, but it would not be fun if it was easy... ;o)

I am a lumper, not a spliter - what can I say?

Andy
Bernard Declercq, 07-11-2015 13:36
Bernard Declercq
Re : Hilberina sp.
Hi Gernot,

H. breviseta has spores with an acerose basal end, so it should be exluded here. Otherwise H. caudata has much longer and wider spores compared to your collection and should excluded too.
Into my opinion your collection should be situated close to H. moseri, a species I never collected however and is said ot have slightly longer spores. Sequencing would be helpful here.

Best regards,
Bernard

Alain GARDIENNET, 08-11-2015 01:32
Alain GARDIENNET
Re : Hilberina sp.

Hi friends,


Good guess from Bernard ! I know a little this species for having collected more than 6 times  I'm at present time working on Lasiosphaeria moseri, by a strange and incredible coincidence. The mine on Buxus, as usual.


See photos of ascospores, one can observe an intraspecifical variability in shape and size of ascospores.


Alain


 

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Andrew N. Miller, 08-11-2015 01:50
Andrew N. Miller
Re : Hilberina sp.
It would be good to sequence several collections of putative Hilberina moseri.

Andy
Alain GARDIENNET, 08-11-2015 08:28
Alain GARDIENNET
Re : Hilberina sp.

Hi Andy,


I look at material. If it's good, mature and sufficient, I send it to you. If not, I think I can to find more next week.


Alain

Jacques Fournier, 08-11-2015 14:49
Jacques Fournier
Re : Hilberina sp.
I also sometimes find a Hilberina on Coriaria myrtifolia that I refer to H. moseri. Its consistently 3-septate ascospores 45-52 x 4,2-5 fit well Hilber's description of the type. They are in average relatively more slender than those reported by Gernot and Alain but variations occur inevitably.
Only Andy can solve this mess!
Jacques
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Andrew N. Miller, 09-11-2015 00:02
Andrew N. Miller
Re : Hilberina sp.
Thank you Alain and Jacques for the material and confidence.  I will try to resolve this species complex (and many others) before I leave this world.

Andy
Gernot Friebes, 09-11-2015 11:16
Re : Hilberina sp.
Thanks, everyone, for sharing your valuable observations! After seeing your photos I think my collection is indeed closest to H. moseri (or "H. moseri complex"). Unfortunately my material consists of only a few ascomata so I fear that won't be enough for sequencing...

Best wishes,
Gernot
Alain GARDIENNET, 09-11-2015 11:29
Alain GARDIENNET
Re : Hilberina sp.

Me too, not enough material, as it's often with such species, but I've a good hope to find it again.


Alain