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08-12-2025 21:04

Mark Stevens

"Hello everyone,I'm relatively new to microscopy (

08-12-2025 21:18

Buckwheat Pete

Hello everyone, Is it possible to at least approx

08-12-2025 18:59

Lothar Krieglsteiner Lothar Krieglsteiner

.. found by a seminar-participant, I do not know t

07-12-2025 17:43

Malcolm  Greaves Malcolm Greaves

This Helvella was in mixed woodland. Uniform cupul

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

07-12-2025 16:07

Arnold Büschlen

Hallo, ich habe in einer Moos-Aufsammlung (epiphy

16-03-2014 22:00

Ralph Vandiest Ralph Vandiest

Hello,I found this species a few months ago but ha

08-12-2025 13:39

Thomas Læssøe

https://svampe.databasen.org/observations/10572899

07-12-2025 22:43

Andreas Millinger Andreas Millinger

Good evening, tried to determine with Munks Valsa

05-12-2025 17:33

Bruno Coué Bruno Coué

Bonjour, je serais heureux de recueillir votre avi

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A microfungus on Geum urbanum
Steve Clements, 19-08-2014 16:09
Hi,
I had a look at this leaf spot on Geum urbanum. The minute pseudothecia? seem to be immersed, only 0.05mm across (50um) apparently producing brown oval spores 6-7 x 3-4. Looking at Ellis and Ellis, or the asscoiated species list in the FRDBI didn't help. The leaf spot - possibly Ramularia gei - also didn't appear in the FRDBI associated species. Nothing looked likely from plurivorous fungi on herbaceous plants in Ellis and Ellis. Is this a no-hoper?
Steve
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Milanka Tanaskovic, 19-08-2014 23:55
Re : A microfungus on Geum urbanum
Peut-être la forme conidienne (Glaeosporium fragariae) de Gnomonia fragariae.
Voir dans Fungoid Pestes of Cultivated Plants by Cooke ; Journal of the Royal Horticultural Society, vols. XXVII. - XXIX.

Mila
Steve Clements, 20-08-2014 19:14
Re : A microfungus on Geum urbanum
Merci beaucoup pour la réponse, Mila - je vais regarder les informations que vous avez suggéré,
Steve