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11-03-2026 17:36

Help for Genus and Species ID
Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

12-03-2026 15:45

Dematioscypha cf. olivacea
Åge Oterhals

Dear forum,I found this small discomycete on a ver

12-03-2026 16:17

Mollisia atlantica
Sylvie Le Goff

Bonjour à tousRécolté dans le 22 en France (ré

12-03-2026 14:37

Octospora
David Wasilewski

These small ascomycota (1-3 mm) ere observed growi

11-03-2026 16:48

Saccobolus minimoides ?
Bruno Coué Bruno Coué

Bonjour, je serais heureux d'avoir votre avis sur

08-03-2026 14:05

Helvella lacunosa
Thierry Blondelle Thierry Blondelle

Bonjour à tous,Sur 3 récoltes supposées de H. l

09-02-2026 22:01

Sp
ruiz Jose

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

11-03-2026 14:14

Scopinella on Dryas octopetala
Gernot Friebes

Hi,I would like to share a collection of Scopinell

15-09-2020 17:27

Thyridaria sp.
Andgelo Mombert Andgelo Mombert

Bonjour, Sur branche morte décortiquée de Berbe

10-03-2026 18:08

Orange discs on Arctium
Marc Detollenaere Marc Detollenaere

Dear Forum,On stems of Arctium, I found some downy

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Diaporthe genistae?
Björn Wergen, 09-02-2011 17:00
Björn WergenHello again,

I have found a Diaporthaceae on Genista with the following features:

Perithecia clustered, sphaerical with a beaked ostiolus, black, reminds on D. strumella.
Spores broadly ellipsoid, hyalin, first with a few bigger guttules, then filled with many small ones, with a central septe and a constriction there, smooth.
Asci with 8 spores (uniseriate), ca. 100-150x10-12 µm.

Found on dead stems of Genista. I didn't find any literature about this species, unfortunately Ellis&Ellis didn't mention it under Genista...

Is it D. genistae? I know about Diaporthe-species with their relation to specific substrates but its just a guess, perhaps somebody can give a hint for literature ;)

regards,
Kazuya
  • message #14226
Björn Wergen, 09-02-2011 17:00
Björn Wergen
Re:Diaporthe genistae?
micro
  • message #14227
Gernot Friebes, 09-02-2011 18:29
Re:Diaporthe genistae?
Hi Kazuya,

D. genistae is something different (see attached original description by Rehm). Compare your find to Diaporthe inaequalis which can also be found on Genista.

Best wishes,

Gernot
  • message #14228
Björn Wergen, 09-02-2011 18:56
Björn Wergen
Re:Diaporthe genistae?
hmm thanks Gernot for help, D. inaequalis has spores around 12-18x7-9µm (see Ellis&Ellis 1997). The spores of my finding has 17-21x8-9. If the different size isn't a problem, it could be D. inaequalis ;)

regards,
Kazuya
Gernot Friebes, 09-02-2011 19:04
Re:Diaporthe genistae?
Munk (Danish Pyrenomycetes) gives 16-24 x 8-12 µm for D. inaequalis, so quite a huge range.

Best wishes,

Gernot
Björn Wergen, 09-02-2011 19:06
Björn Wergen
Re:Diaporthe genistae?
It seems as if my literature is not good enough for me to make larger studies about pyrenomycetes :D
thanks again Gernot, if you have some material about Diaporthe, I am always interested ;)

regards,
kazuya