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20-02-2014 17:26

Garcia Susana

Hi all I collected this ascomycete growing on har

23-02-2014 21:06

Bometon Javier Bometon Javier

En bosque de ribera, en una rama caida creo que de

23-02-2014 15:47

Vasileios Kaounas Vasileios Kaounas

does anyone have the following literature ???Nova

23-02-2014 13:27

Bometon Javier Bometon Javier

de 0'3-0,8mm, sésiles, color negro olivaceoAscas

21-02-2014 20:59

Ralph Vandiest Ralph Vandiest

Hello,I found this species on what I think is frax

22-02-2014 23:00

Salvador Tello

Hola a todos.Tengo estos hongos que pienso que son

21-02-2014 12:12

Garrido-Benavent Isaac

Dear all,I'm Isaac Garrido Benavent, from Spain. T

21-02-2014 10:47

Gilbert MOYNE

Bonjour,Voici un petit ascomycète récolté le 18

21-02-2014 18:34

Enrique Rubio Enrique Rubio

HI to all I'd like to know some idea about this p

21-02-2014 08:21

Maren Kamke Maren Kamke

Hi everybody,a week ago I found this pyreno on woo

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Dactylospora?
Garcia Susana, 20-02-2014 17:26
Hi all

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

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Hans-Otto Baral, 20-02-2014 20:20
Hans-Otto Baral
Re : Dactylospora?
Hi Susana

clearly a Dactylospora but I have never seen such broad spores which exclude D. stygia.

Zotto
Martin Bemmann, 20-02-2014 20:49
Martin Bemmann
Re : Dactylospora?
Hi Susana

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
Hans-Otto Baral, 20-02-2014 21:41
Hans-Otto Baral
Re : Dactylospora?
Good idea, Martin. But then the pigment in the exciple should be blue-violet in water (greenish in KOH) fide Ihlen et al. The pigments in Dactylospora are strongly KOH-dependent, so do you have a photo in water, Susana?

Also I did not notice a warted spore surface in the description, though this might easily be overlooked.

Zotto
Martin Bemmann, 20-02-2014 22:21
Martin Bemmann
Re : Dactylospora?
Yes 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
Garcia Susana, 20-02-2014 22:58
Re : Dactylospora?
Hello

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

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Martin Bemmann, 21-02-2014 15:08
Martin Bemmann
Re : Dactylospora?
Hi 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
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Hans-Otto Baral, 21-02-2014 16:27
Hans-Otto Baral
Re : Dactylospora?
o.k., fine! then I will take this as identified :-)

Zotto
Garcia Susana, 21-02-2014 19:31
Re : Dactylospora?
Thanks Martin and Zotto.
If as you say adjusts to the definition of the species I file as D. bloxamii

regards
Susana

Martin Bemmann, 21-02-2014 20:01
Martin Bemmann
Re : Dactylospora?
Hi 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

Garcia Susana, 21-02-2014 20:35
Re : Dactylospora?
Yes, I have observed the ornamentation x100 (immersion)
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

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Martin Bemmann, 21-02-2014 20:50
Martin Bemmann
Re : Dactylospora?
Hmmm...

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.
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Garcia Susana, 24-02-2014 07:55
Re : Dactylospora?
Thanks for the info, Martin.
regards
Susana