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27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

25-03-2024 14:08

Ursula Kozik

Bonjour et bonne journée, On m'a envoyé une tro

25-03-2024 03:56

B Shelbourne B Shelbourne

• Scuttelinia: Macro and habitat.• S. scutella

25-03-2024 20:21

DAVID MARCOS DAVID MARCOS

Bonjour, je m'appelle David et je débute dans l'i

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Ophiostoma or Ceratocystis
Eduard Osieck, 19-04-2015 13:27
This long-necked pyrenomycete (only top of neck shown) is growing on Hypoxylon petriniae (the latter on Fraxinus). The long necks (up to 10 mm) have often a drop at the end. Ostiolar hyphae divergent and pointed.

Belongs this to the genus Ophiostoma or Ceratocystis?
Does anybody know about its occurrence on Hypoxylon?
Is there a modern key to these genera?

Thanking you in advance,
Eduard
  • message #35301
Wilhelm De Beer, 19-04-2015 23:33
Wilhelm De Beer
Re : Ophiostoma or Ceratocystis
Dear Eduard

This is indeed very interesting! I am specializing in the ophiostomatoid fungi and during the last few years we have found a small number of isolates of Ophiostoma (not Ceratocystis) from fruiting bodies of basisidiomycetes. This does not fit the general notion that most Ophiostoma are associates of bark beetles and/or wood-inhabiting. I have thus only 6 weeks ago put a new student onto a project to invetsigate the biology of these isolates from basidiomycetes. And although Hypoxylon is an ascomycete, the fungus you found crealy fit within this group. It seems as if you are based in the Netherlands? It just so happens that I am in Utrecht this week (leaving 26 Apr) for meetings at the CBS. Is there any way in which you can make this material available to me? I would like to try and make a culture from this fungus, but it is also essential that an herbarium specimen be preserved.
I would appreciate if we can communicate further by email, it will be easier for me than via this website.

wilhelm.debeer@fabi.up.ac.za

Sincerely
Wilhelm de Beer
Eduard Osieck, 01-09-2021 11:59
Re : Ophiostoma or Ceratocystis
To complete this topic: Finally this collection has got a name: Sporothrix hypoxyli, see Crous et al. 2021, New and interesting fungi, Fungal Systematics and Evolution (FUSE) 7: 328-330).

Eduard