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25-11-2025 14:24

Thomas Læssøe

https://svampe.databasen.org/observations/10490522

24-11-2025 18:17

ruiz Jose

Hola en madera, quizás de alnus. Esporas(12.1) 12

25-11-2025 11:03

Mick Peerdeman

Hi all,One of my earliest microscopy attempts, so

29-06-2016 18:06

Elisabeth Stöckli

Bonjour,Trouvé sur branches mortes cortiquées de

24-11-2025 15:23

Arnold Büschlen

Hallo, auf einer offenen Kiesfläche am Rande ein

18-11-2025 18:26

David Malloch David Malloch

I am trying to locate the article, Müller, E. 195

23-11-2025 11:16

Bohan Jia

Hi,  I found small discs growing on dead stem of

21-11-2025 10:56

Christopher Engelhardt Christopher Engelhardt

Very small (~0,5 mm) white ascos, found yesterday

21-11-2025 15:22

Vasileios Kaounas Vasileios Kaounas

Found in moss, forest with Pinus halepensis. Dime

21-11-2025 10:47

François Freléchoux François Freléchoux

Bonjour,Peut-être Mollisia palustris ?Trouvée su

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An anamorph on the hymenium of Neottiella vivida
François Bartholomeeusen, 26-11-2019 18:41
Hello forum members,

On October 15, 2019, I found several fruiting bodies on a heathland, which I determined on October 16, after microscopic examination, as Neottiella vivida. Two days later I repeated the examination in the hope that the spore ornamentation had improved. Instead, I found an anamorph. At first I thought of contamination but because of the presence of conidiophores this was ruled out. The, in first instance bright orange hymenium, was two days later covered with a black, powdery layer caused by the brown conidia.

Does anyone have experience with this anamorphic?

Thank you very much in advance,

François Bartholomeeusen
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David Malloch, 27-11-2019 03:45
David Malloch
Re : An anamorph on the hymenium of Neottiella vivida
This looks like Harzia acremonioides (syn. Acremoniella atra). I have not seen this species, but I have cultured H. verrucosa, a very similar species with verrucose conidia. Harzia verrucosa is a mycoparasite producing typical contact cells on susceptible fungal hosts, so maybe your specimen  was parasitic on Neottiella vivida.

François Bartholomeeusen, 27-11-2019 17:45
Re : An anamorph on the hymenium of Neottiella vivida
Dear David,

Thank you very much, I could never have solved this problem on my own. For me this is one less UFO (Unidentified Fungal Object)!


Kind regards,

François