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14-06-2025 13:28

Richard VALERI Richard VALERI

Bonjour à tous.Trouvé au sol, longuement résupi

13-06-2025 16:34

Andgelo Mombert Andgelo Mombert

Bonjour,Un petit discomycète qui me résiste. Il

13-06-2025 19:57

Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y avellanosEjemplar uni

12-06-2025 19:36

Rodríguez Borja Rodríguez Borja

Hi, I have got this collection hoping you can giv

13-06-2025 09:41

Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

12-06-2025 15:53

Viktorie Halasu Viktorie Halasu

Hello, I keep finding something with spores like

12-06-2025 08:58

Josep Torres Josep Torres

Hello.Some synnemata sprouting in a scattered but

12-06-2025 19:26

Charles Aron Charles Aron

Hi All, Recently I found this minute Bryoscyphus

12-06-2025 13:04

Angel Pintos Angel Pintos

Hi, does anyone have the following article: Tibel

11-06-2025 13:44

Nicolas Suberbielle Nicolas Suberbielle

Bonjour,J'ai trouvé cette espèce aux alentours d

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Lophiostoma macrostomum?
Björn Wergen, 29-01-2011 16:29
Björn WergenHello,

I have found an lophiostomoid fungus on dead stems of Aruncus (dioicus) with the following macro- und microscopical features:

Fruitbody lophiostomoid, ca. 0,2-0,5x0,1-0,2 mm, black.
Spores 25-30x5-6,5 µm, with one central septe, each cell with 2-4 bigger and a few smaller guttules, hyaline with pale green-brownish color, endings pointed.
Asci 70-100x5-9 µm, with 8 spores (biseriate), bitunicate.
Paraphyses hyaline, 2-4 µm.

Perhaps someone can help with determination, I think it is Lophiostoma macrostomum, but is Aruncus a substrate for this species? I don't have any good literature about this dothideo-families :D

regards and thanks for help,
Kazuya
  • message #14094
Björn Wergen, 29-01-2011 16:30
Björn Wergen
Re:Lophiostoma macrostomum?
micro
  • message #14095
Björn Wergen, 29-01-2011 16:33
Björn Wergen
Re:Lophiostoma macrostomum?
Ah oui, not to forget: The spores have hyaline appendices on both endings, ca. 2-6µm long and not easy to see.

regards,
Kazuya
Alain GARDIENNET, 29-01-2011 16:57
Alain GARDIENNET
Re:Lophiostoma macrostomum?
Even if ascospores are often given longer, I think your recolt is very probably L. macrostomum. This substrate is not a problem.
Alain
Björn Wergen, 29-01-2011 17:00
Björn Wergen
Re:Lophiostoma macrostomum?
hi Alain,

many thanks for the help, L. macrostomum spores are often given as 28-35µm long, I saw a few spores with over 32µm, but "normal" size was between 25 and 30µm.
regards
Kazuya
Gernot Friebes, 29-01-2011 17:02
Re:Lophiostoma macrostomum?
Hi Kazuya,

yes, this looks very much like L. macrostomum. It occurs on many different plants (on both wood and herbaceous stems).

Best wishes,

Gernot
Björn Wergen, 29-01-2011 17:31
Björn Wergen
Re:Lophiostoma macrostomum?
many thanks Gernot ;)

regards,
Kazuya