Parasite on Octospora - Forum ASCOFrance

03-10-2025 13:44

Unknown on Populus -> Pyxidiophora species

Riet van Oosten

Hello, Found by Laurens van der Linde on Populus

13-10-2025 19:05

Blanc sur tronc décortiqué

Louis DENY

Bonjour forumSur tronc décortiqué de feuillu x,

17-02-2013 21:11

Peter Welt

Jamoni, P.G. 1998. Un nuovo discomicete coprofilo

11-10-2025 20:27

On Robinia pseudoacasia

Marcel Heyligen

Found on a barked branch, 14 mm in diameter, of Ro

11-10-2025 14:20

Chromelosporium

Jean-Luc Ranger

bonjour à tous, Je ne vois pas comment l'on peut

09-10-2025 22:14

Hymenoscphyus or Bryoscyphus? Yellow cup / white stipe

S. Rebecca

We just had the Bavarian Mycology Conference in Au

10-10-2025 00:49

Amicodisca svrcekii ?

Ethan Crenson

Hello all, This was found last weekend on a hardw

06-10-2025 15:57

Lophiostoma

David Chapados

Hi, Could anyone help me with this Lophiostoma?

04-10-2025 02:13

Hymenoscyphus with a reddish stipe

Francois Guay

Hi everyone, I found this Hymenoscyphus growi

03-10-2025 22:17

White asco on Fagus grandifolia leaf

Francois Guay

Hi everyone, I found this white, star-shaped

Parasite on Octospora

Dragiša Savic, 31-01-2023 13:50

Regards to all
An unusual finding, especially for me. Some anamorphic parasite on Octospora aff. gyalectoides. I need help or advice where to look?

Dragiša

Viktorie Halasu, 01-02-2023 01:33

Re : Parasite on Octospora

Hello,
there is Melanospora brevirostris on hymenium of Geopora sp, perhaps this is related?
Viktorie

Charles Aron, 01-02-2023 19:21

Re : Parasite on Octospora

Hi,

Really interesting to find a parasite on a genus which, to my mind, is difficult to locate. Melanospora brevirostris(see photos) is not uncommon on Geopora on the sand dunes of west Anglesey. Melanospora ascospores look quite diifferent so it does suggest some other (probably anamorphic) genus.

Best wishes,

Charles.

Robin Isaksson, 01-02-2023 20:36

Re : Parasite on Octospora

Sorry to borrow your thread, but i wounder if anyone have seen this one. I have found twice on pulvigera with hyaline conidia and black small perithecia. 4.5-5,4-1.8-2.3 um pictures

I have seen your parasite aswell or close. On octospora coccinea in Sweden, with brownish spores.
couldent fina a name for it though.

I think it is amazing to find species on so shortlived species like this.

Best regards

Alain GARDIENNET, 02-02-2023 16:09

Re : Parasite on Octospora

Phoma-like ?

Jan Eckstein, 06-02-2023 17:45

Re : Parasite on Octospora

Dear Dragisa,

an extraordinary find! I never encountered this and I also didn't came across something like it in the Octospora sl literature. I wonder if it is host specific.

This doesn't help you, but thank you for this very cool observation.

With best wishes

Jan

Dragiša Savic, 06-02-2023 17:56

Re : Parasite on Octospora

Thanks Alain, very possibly Phoma or something close to it. We'll see what the sequence says.

Jan, this was actually found by Lukaš Janošik, and many other Octospora species of course. He was visiting me for a week.

Accès membres

Forum AscoFrance