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25-04-2025 17:24

Stefan Blaser

Hi everybody, This collection was collected by JÃ

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

10-02-2026 17:42

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me donner

10-02-2026 18:54

Erik Van Dijk

Does anyone has an idea what fungus species this m

09-02-2026 20:10

Lothar Krieglsteiner Lothar Krieglsteiner

The first 6 tables show surely one species with 2

09-02-2026 14:46

Anna Klos

Goedemiddag, Op donderdag 5 februari vonden we ti

09-02-2026 11:42

Ã…ge Oterhals

Hi forum, I found this Lachnum on old hardwood tw

02-02-2026 21:46

Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

25-01-2026 23:23

Tomaz Vucko Tomaz Vucko

Hello! I found this species that resembles Delitsc

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Pycnidia on oak bullet galls
Bernard Declercq, 24-03-2023 16:08
Bernard DeclercqHello,

A friend of mine collected galls with pynidia:

Conidiomata erumpent, pycnidial/acervular (no papil), 0.6-1 mm diam., black.
Conidia ellipsoid, ovoid to pyriform, 11-15(16)x6-7.5 µm, thick-walled, minutely guttulate, smooth, subhyaline to pale brown.
Conidiogenous cell tapering, 11-16x2.5-3 µm, tip about 1 µm diam.,smooth, hyaline.

I have no idea where I have to look for. Your help is welcome.

Regards,

Bernard
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François Bartholomeeusen, 25-03-2023 18:37
Re : Pycnidia on oak bullet galls
Good evening Bernard,

On April 25 2018, I found the same conidiomata, probably on Andricus kollari (Knikkergalwesp op zomereik). I hereby provide some photos. This is purely informative as I failed identification ... maybe this will inspire others?


Kind regards,


François


dimensions conidia:


(10.4) 12.2 - 14.7 (15.6) × (6.9) 7.2 - 8.9 (9.3) µm
Q = (1.2) 1.4 - 1.9 (2) ; N = 30
Me = 13.3 × 8 µm ; Qe = 1.7

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