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15-11-2025 23:22

Hymenoscyphus macroguttatus? on Phytolacca
Mario Filippa

Hello,this is what I think to be Hymenoscyphus mac

14-11-2025 16:26

Small species on Cytisus scoparius
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Hello everyone, On dead wood of Cytisus scoparius

15-11-2025 20:25

Cryptosphaeria ligniota?
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Hello, Found by Laurens van der Linde, Nov. 2025

15-11-2025 09:21

Anamorph on Buxus.
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Hello.An anamorph resembling Capronia is sprouting

14-11-2025 18:31

literature request
Lothar Krieglsteiner Lothar Krieglsteiner

Hello,can somebody provide me with a file of:Rothe

12-11-2025 21:47

sp en restos de poda
ruiz Jose

Hola a todos, me envían esta colección en resto

12-11-2025 09:25

Pseudombrophila on soil
Viktorie Halasu Viktorie Halasu

Hello, I need help with a pale terrestric Pseudom

11-11-2025 20:16

yellow discs on a Quercus robur leaf
Bohan Jia

Hi, lastly I have found these tiny yellow decayin

09-11-2025 13:20

Ascomycete on Rubus.
Josep Torres Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

08-11-2025 12:10

Phacidium
Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

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Identification of spore trap spores
Martin Mullett, 29-09-2011 18:05

 Hello all,


I am running a spore trap (Burkhard) in a forest in the southeast of England and am having difficulty identifying some (or many!) of the spores.
I was wondering if anyone recognizes the ones in the photos?  They are very distinct, long (some 100um) and seem to be trapped on a rainy day in middle of June after a long dry period.  Unfortunately nothing is known about the fruiting body.
Does anyone have any ideas??


Many thanks,


Martin

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Hans-Otto Baral, 29-09-2011 18:13
Hans-Otto Baral
Re : Identification of spore trap spores
Hi Martin

this reminds me of ascospores of Ophiobolus, üartly broken in two parts, with one cell inflated in the middle.

Zotto
Peter Welt, 29-09-2011 18:45
Peter Welt
Re : Identification of spore trap spores

Hi Martin,

This is almost certainly Ophiobolus acuminatus. I the middle of the constricted (Fig. 2 middle), and it thickened spores are typical for this species.

Peter

Martin Mullett, 30-09-2011 20:48
Re : Identification of spore trap spores
Hello Peter and Zotto,
Yes it is Ophiobolus, it fits perfectly!! Thank you very much for your help!
Can I ask if you think this new photo is a Fusarium species?  It reminds me of Fusarium with a sort of 'heel cell' but it doesn't seem quite right.
Thanks again for your help!

Martin
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Hans-Otto Baral, 30-09-2011 21:07
Hans-Otto Baral
Re : Identification of spore trap spores
Hi Martin

sorry I can't. But a question: do you always kill the spores that you trap? I think they will not run away if you use tap water instead.

But without joking: I recognize species much easier when the spores are alive, when I see the guttules inside etc. And they are well visible on photos without staining.

Zotto
Martin Mullett, 04-10-2011 13:47
Re : Identification of spore trap spores
Haha,
Yes you are right, they shouldn't run away!  But sometimes they do germinate before I am able to have a look at them.  But maybe I will be kinder and not kill them straight away in the future :)

Thanks,

Martin