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09-11-2025 13:20

Josep Torres Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

08-11-2025 12:10

Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

08-11-2025 00:29

Francois Guay Francois Guay

I found this species in Quebec, Canada, on herbace

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

08-11-2025 09:15

Michel Hairaud Michel Hairaud

Bonjour, Pouvez vous m'aider à identifier ce Mol

06-11-2025 16:50

Rot Bojan

Hello! Yesterday I found a fungus on or near a nee

05-11-2025 11:33

Pierre Repellin

Bonjpur,J'ai trouvé, sur une hampe florale d'Alli

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

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Help identification: is this spore a spore of Puccinia ?
Yannick Miras, 19-11-2020 15:38
Dear Colleagues,
May you help me in order to know if this fungal spore is Puccinia? If yes, do you think possible to know which species of Puccinia it can be?
I really thank you for your help.
Best wishes
Yannick
  • message #66038
Björn Sothmann, 19-11-2020 15:58
Björn Sothmann
Re : Help identification: is this spore a spore of Puccinia ?
Hi Yannick,

it could be a uredospore of a rust fungus. Unfortunately, it is not even possible to identify this to genus level though. It could be Puccinia, Uromyces...

When it comes to rust ID, the first step is to identify the host plant. Once this is done, there are usually only a few or even just one rust species left and identification becomes feasible on most cases. If you just found a single spore in one of your preparations, there is no chance of identification, unfortunately.

Björn
Yannick Miras, 20-11-2020 14:46
Re : Help identification: is this spore a spore of Puccinia ?
Hi Björn,Thank you very much for your answer. It will be unfortunately impossible to identfy the plant host. These spores come indeed from a lacustrine core I am currently studying. I am palynologist. But I will investigate the rust fungi. Thanks again. Best wishes
Yannick