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04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

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

03-11-2025 19:41

David Chapados David Chapados

Hi,Does anyone knows which genus could this be? G

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

03-11-2025 16:30

Hans-Otto Baral Hans-Otto Baral

Hello I want to ask you if you have found this ye

01-11-2025 09:14

Francis Maggi

Bonjour,Trouvé sur Xanthoria parietina à Valdebl

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

31-10-2025 09:19

Lothar Krieglsteiner Lothar Krieglsteiner

Can somebody provide me with a file of:Rogerson CT

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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