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27-03-2026 15:23

Gernot Friebes

Hi,this Trichopezizella deviates from typical T. b

27-03-2026 15:08

Gernot Friebes

Hi,I'm looking for help with this coelomycete on C

26-03-2026 15:31

Ã…ke Widgren Ã…ke Widgren

Hello,I found this one in October last year, on r

27-03-2026 10:47

Ã…ge Oterhals

I have tentatively identified this Stictis to S. f

25-03-2026 10:35

Hulda Caroline Holte

Hello,I collected this species growing on a dead b

24-03-2026 21:37

Elisabeth Stöckli

Bonsoir,Sur bois (tronc) très pourri de conifère

26-03-2026 12:50

David Chapados David Chapados

Hi,I'm having a hard time figuring which Pseudombr

26-03-2026 11:17

Vasileios Kaounas Vasileios Kaounas

Found 11-03-26, in leaf of Ulmus sp. Diameter 2-4

25-03-2026 22:23

Marc Detollenaere Marc Detollenaere

Dear Forum,On a debarked stem of Tilia, we found s

24-03-2026 15:44

Ã…ge Oterhals

I hope someone can confirm the name of this collec

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Gibberella sp? on Acer.
Mirek Gryc, 22-03-2021 14:23

Hi.
Many times I found species from this kind but have usually missed conidiophores. This time, however, both forms occur at the same time almost in every sample collected so I think conidiophores belongs to this species.
I looked through all the available articles on Gibberella but nothing could match. Finally, I found a drawing of Gibberella intricans, Wollenweber, H.W. Fusaria Autographic Delineata, EDN 3: I, 660-1100: 810 (1930).
In principle, all features match my collection.
Initially measured the spores overripe, I did not fit their width. I found a less mature fruiter whose spores with sizes correspond to those from the engravings.
Relevant note is that the spores are in most 3-septata (rarely 5-septata).

Spores;
(27.7) 27.8 - 31.2 (31.5) × (5.3) 5.9 - 7.3 (7.5) µm
Q = (3.9) 3.94 - 5.27 (5.3) ;
Me = 29.1 × 6.6 µm ; Qe = 4.4
Conidia
31.3 - 37.2 × 4.6 - 4.89 (4.9) µm
Q = (6.8) 6.84 - 7.6 ;
Me = 33.7 × 4.7 µm ; Qe = 7.2


However, I am wondering a very poor reaction to KOH?
What is your opinion on it?
greetings
Mirek

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Bernard Declercq, 22-03-2021 17:49
Bernard Declercq
Re : Gibberella sp? on Acer.
Hi Mirec,

This is clearly a Fusarium ss. str.(syn.: Gibberella).
Compare with lignicolous species Fusarium lateritium Nees, ascospores as well as 3(5)-septate conidia seem to match.

Bernard
Mirek Gryc, 22-03-2021 19:43
Re : Gibberella sp? on Acer.
Hi Bernard.
Again, I had to look a bit of literature about it and compare my.
It seems to me that you are right. Features very good fit to the genre that you offered.
Thank you very much
Mirek