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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

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

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

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Re : Botryosphaeriaceae?
Garcia Susana, 27-03-2013 13:42
Hello to all:

Pseudotecios of up to 250um of diameter, smoothed, on leaf of quercus.
Ascas of 40-50 x 10um.
Spores elipsoidales, gutuladas, of 10 x 4
I do not observe hamatecio


I have thought that it can belong to Botryosphaeriacea, and inside this family belong to the genre Guignardia.
Might it be??


Thank you in advance?


Susana

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Adrian Carter, 28-03-2013 11:21
Re : Botryosphaeriaceae?
Hello Susana:

I am not familiar with this fungus but you might want to check Anisostomula quercus-ilicis (Trav.) v Hohn. or Guignardia punctoidea (Cooke) Schroter. The former is in "Amerosporen Pyrenomyceten" (v. Arx & Muller 1954), the latter in Ellis & Ellis Microfungi on Land Plants. 

At least it's a start.

Best of luck.

Adrian Carter
Garcia Susana, 28-03-2013 19:41
Re : Re : Botryosphaeriaceae?
Hi Adrian:
I have no literature you mention and have not found anything on internet practically. For G. puntoidea indicate somewhat larger spores (10-16 x 4-6).
In A. quecus-ilicis nothing found.

Thank you very much, greetings
Susana?

Adrian Carter, 28-03-2013 21:55
Re : Re : Botryosphaeriaceae?
I am sorry but I only have paper copies of the references I mentioned and cannot send by email.

In Ellis & Ellis Microfungi of Land Plants they cite spore size of 8-13x3-5u for Guignardia punctoidea. A synonym for Anisostomula quercus-ilicis is Guignardia quercus-ilicis.

Perhaps some kind folks on the forum could provide further references via the email.

I am afraid I can't help any further.

Adrian
Chris Yeates, 28-03-2013 23:13
Chris Yeates
Re : Re : Botryosphaeriaceae?
buenas noches Susana
this is the best I can do with little time (from Ellis & Ellis):

amitiés
Chris
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Garcia Susana, 29-03-2013 19:41
Re : Re : Botryosphaeriaceae?
Hello
Thank you very much to you both.
I see that the document that you send the spore size fits.
However, without more information I can not say that is G. puntoidea.
I will file as possible Guignardia sp.
greetings
Susana?