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05-03-2026 10:07

White apothecia on pine cone
Hulda Caroline Holte

Hello, I found and collected this species growing

07-03-2026 13:06

Phaeohelotium parasulphuratus ?
éric ROMERO éric ROMERO

Bonjour tous, Sur cône d'épicea fortement imbu,

23-12-2025 08:27

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

28-02-2026 11:05

Peziza
Yanick BOULANGER

Bonjour à tousLe 24/02/2026 à Montmacq, devant m

08-03-2026 14:05

Helvella lacunosa
Thierry Blondelle Thierry Blondelle

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

07-03-2026 22:22

Volutella?
Josep Torres Josep Torres

Hello.Some very tiny conidiomes collected in the D

06-03-2026 17:51

Orbilia?
William Slosse William Slosse

Good evening all,On March 4, 2026, I found the fol

05-03-2026 16:30

Is this Diaporthe rudis?
François Bartholomeeusen

Dear forum members, On the 2nd of February 2026,

06-03-2026 09:41

indian literature
Alain GARDIENNET Alain GARDIENNET

Hi forum, I'm now looking for another reference c

05-03-2026 19:29

Ciboria caucus?
William Slosse William Slosse

Good evening everyone,On March 4, 2026, I found th

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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