24-03-2026 21:37
Elisabeth StöckliBonsoir,Sur bois (tronc) très pourri de conifère
25-03-2026 10:35
Hulda Caroline HolteHello,I collected this species growing on a dead b
26-03-2026 15:31
Åke Widgren
Hello,I found this one in October last year, on r
25-03-2026 22:23
Marc Detollenaere
Dear Forum,On a debarked stem of Tilia, we found s
24-03-2026 15:44
Åge OterhalsI hope someone can confirm the name of this collec
25-03-2026 20:53
François BartholomeeusenDear forum members,On 23 March 2026, I found sever
23-03-2026 20:16
Miguel Ángel Ribes
Good eveningI'm unable to identify this Coprotus o
25-03-2026 15:06
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous me confirm
I collected this ascomycete growing on hardwood.
Size apothecia to 800um diameter
Asci are octosporicas, 45-55 x 13-17um
The spores are finely ornamented with warts.
I think it may be Dactylospora, but I have no information.
Any idea?
Thank you, greetings
Susana
clearly a Dactylospora but I have never seen such broad spores which exclude D. stygia.
Zotto
your find could probably fit to D. aeruginosa which grows on lichen but also saprobic on wood. See attached paper with a key.
Regards
Martin
Ihlen-etal-2004-Dactylospora-0002.pdf
Also I did not notice a warted spore surface in the description, though this might easily be overlooked.
Zotto
it might be not that easy! Hafellner 1979 (Karschia) has 9 Dactylospora species on wood (including var.s) but of course not mentioning aeruginosa, that was errected by Holien&Ihlen 2004 and not taken in synonomy with a previous known species.
The closest match in Hafellner's work is D. bloxamii.
@Susana: did you observe branched paraphyses? It is not clear from your last picture.
Regards
Martin
I send photo in water.
The paraphyses are difficult to see clearly, but I think they are not branched.
I also think that the species should be indicate in their description the presence of spore ornamentation.
regards
Susana
yes, D. bloxamii should show a slightly "folded" ornamentation (see attached picture from Hafellner). It is visible under immersion only he writes. The other features fit quite well.
regards
Martin
Zotto
If as you say adjusts to the definition of the species I file as D. bloxamii
regards
Susana
I would be satisfied when seeing the ornamentation since I never saw this species myself. Did you observe the spores with the 100x under immersion?
Best regards
Martin
Water photo reveals spores irregular shape because of small warts. Focusing and defocusing, get to see some small surface spots. Photographing this ornamentation is a real problem for me (I use a compact on the ocular without support), submit a photo that I think that ornamentation is sensed.
regards
as you can see in the attached key of Hafellner, a warty ornamentation would lead to another species (verruculosa) but with smaller spores. If you have the same slide, now dried up a little and now thinner, try to observe it again.
Martin
Update: I just realized that Hafellner accepts in his key unsculptured spores but with other features matching for bloxamii. So I suggest as well to file your find as D. bloxamii.
regards
Susana