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31-03-2026 21:18

Lambertella tetrica paper
Miguel Ãngel Ribes Miguel Ángel Ribes

Good evening. oes anyone have the original descrip

31-03-2026 20:57

"Nectria" - for a lack of better knowledge...
Stefan Blaser

Hello everybody, I hope somebody can help me with

26-03-2026 15:31

Hymenoscyphus ombrophiliformis?
Ãke Widgren Åke Widgren

Hello,I found this one in October last year, on r

31-03-2026 16:20

Helotiales from Tanzania
Mlcoch Patrik Mlcoch Patrik

Hello, Please about help with determination. On

31-03-2026 08:19

Daldinia childiae parasité
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

30-03-2026 12:18

Demande d'aide
Sylvie Le Goff

BonjourRécolté sur la base de Pteridium aquilinu

30-03-2026 12:03

Dumontinia on Ficaria?
William Slosse William Slosse

Hello all,On 27/03/26, in Kraaiveld in Wingene (Be

25-03-2026 10:35

Encoelia impudicella?
Hulda Caroline Holte

Hello,I collected this species growing on a dead b

28-03-2026 17:41

Mollisia sur Molinia
Louis DENY

Bonjour forum,Mollisia trouvée sur tige de Molini

30-03-2026 09:53

Lachnum mollissinum ?
Yanick BOULANGER

BonjourVoici des petites fructifications poilues s

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Diaporthe spiculosa?
Maren Kamke, 17-02-2026 09:41
Maren KamkeGood morning,

I found a Diaporthe species on Sambucus nigra that I currently suspect to be Diaporthe spiculosa. I would greatly appreciate any opinions or confirmation regarding this identification.


The full field documentation and photos are available here: 
https://www.inaturalist.org/observations/338900548


Kind regards,
Maren

Mathias Hass, 17-02-2026 10:29
Mathias Hass
Re : Diaporthe spiculosa?
Looks like Diaporthe. It seems to me what I would call Diaporthe circumscripta (as in Ellis and Ellis). I was not aware of the name D. spiculosa. Curiously Diaporthe circumscripta is listed some places (eg. Bladmineerders) as synonym to Aglaospora profusa (Pleosporales !!!), but not by Index Fungorum, which has Aglaospora profusa by the current name Massaria anomia. I have no idea what the correct name should be or whether D. spiculosa and D. circumscripta are the same thing or different species.

Cheers Mathias
Enrique Rubio, 17-02-2026 14:01
Enrique Rubio
Re : Diaporthe spiculosa?
Hi both.
This is what I identified years ago as Diaporthe spiculosa on Sambucus nigra. The spores appear to be larger than those cited for Diaporthe circumscripta.
Cheers
  • message #84609
  • message #84609
Mathias Hass, 18-02-2026 12:54
Mathias Hass
Re : Diaporthe spiculosa?
Maybe helpful
  • message #84622
Mathias Hass, 18-02-2026 14:13
Mathias Hass
Re : Diaporthe spiculosa?
Wehmeyer (p.261) seem to consider D.spiculosa synonymous with D. circumscripta. His sporemeasures are: 12-15 x 2,5-4. See:

Enrique Rubio, 18-02-2026 20:26
Enrique Rubio
Re : Diaporthe spiculosa?
Hi Mathias.

However, Wehmeyer (The Genus Diaporthe) considers Diaporthe spiculosa to be a priority. Basyonim. Spaheria spiculosa Alb. & Schwein.
  • message #84626
Mathias Hass, 18-02-2026 22:14
Mathias Hass
Re : Diaporthe spiculosa?
Hi Enrique,

I guess you are rigth, but I'm not into the finer details of taxonomy :-) Hypoxylon spiculosum (1857) -> Diaporthe spiculosa (1870) (the name Spaheria spiculosa(1805) is listed as nom. illegit.) seems to beat Diaporthe circumscripta (1870) . Of course this asumes that the are the same species...would require DNA to be certain, I guess, as Diaporthe species differ very little in morphology.
Maren Kamke, 18-02-2026 23:21
Maren Kamke
Re : Diaporthe spiculosa?
Hi Mathias, hi Enrique,
thanks a lot to both of you for the helpful input.

Based on your comments (and Wehmeyer's treatment), I'm happy to keep this collection under Diaporthe spiculosa (= D. circumscripta sensu Wehmeyer) on Sambucus nigra. I agree that morphology alone has its limits in Diaporthe, so I've kept the specimen in case sequencing can be done later to confirm the determination.


Kind regards,
Maren