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19-09-2018 15:30

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Je cherche une version digitale de ce docu

18-09-2018 21:28

Jacky Launoy

On moose dung (Alces alces) collected in Sweden (P

14-09-2018 21:14

Marc Detollenaere Marc Detollenaere

Hello forum, On rabbit dung I discovered a number

18-09-2018 15:33

Chris Yeates Chris Yeates

Bonjour tous Normally I steer clear of this daunt

18-09-2018 14:10

Savic Dragisa

Is this Pachyella punctispora? I found it on a dam

17-09-2018 08:17

Pintos Angel Pintos Angel

Hello, anybody has?.Moore G (1998) A comparison of

13-09-2018 13:04

Edvin Johannesen Edvin Johannesen

I have collected a "propolioid" specimen on large

13-09-2018 20:25

Quijada Luis

Hi all, I am currently working in the genus Holway

13-09-2018 22:47

joseph Bartolome

Bonjour depuis 2017 je fais des photos d Asco ,mai

13-09-2018 19:17

Marc Detollenaere Marc Detollenaere

Dear forum, Yesterday I found setous fruit bodies

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Calicium sp
Garcia Susana, 10-12-2013 16:45
Hi all

Found these apothecia growing on old wood of Quercus.
Size up to 1 mm high.
I have come to define the genre as Calicium, but it is difficult for me to determine the species. I think it can be C.salicinum, but I wish someone confirm or reject my hypothesis.
Thanks in advance, greetings.


Susana (Spain)

  • message #26172
  • message #26172
Alain GARDIENNET, 10-12-2013 17:18
Alain GARDIENNET
Re : Calicium sp
Hi Susana,
No problem or C. salicinum. Nice photos.
Alain
Garcia Susana, 10-12-2013 20:50
Re : Calicium sp
Thanks.
Greetings

Susana
Garcia Susana, 11-12-2013 00:13
Re : Calicium sp
Hello again

Reviewing the notes of this collect I've noticed that there may be two species of Calicium mixed on the same substrate.
I came back to look at the microscope and I note that there are two types of spores:


1.-spores with spiral ornamentation belonging to the apothecia with brown capitulum and an average size of 8.1-9.1 x 4.2-4.7um, we determine as C.salicinum.


2 -. Larger spores (12.1-13.3 x 5.9-6.5um) with warty ornamentation and irregular cracks, belonging to the totally black apothecia (top left image macro).


These last apothecia could belong to C.abietinum?


Thank you, greetings


Susana

  • message #26179
Alain GARDIENNET, 11-12-2013 07:47
Alain GARDIENNET
Re : Calicium sp

Amazing !


Ascospores are fissurate-areolate, >12 µm, yes it'sprobably  C. abietinum. A very interesting collect !


I suppose that you haven't seen thallus ?


But you also should look towards C. denigratum. Compare the to descriptions to choose.


 


Alain

Garcia Susana, 11-12-2013 19:25
Re : Calicium sp
Hi Alain

First, I have no experiencie in determining this type of fungus.
I looked again the sample.
In my first impression I believed that there was not thallus, I believed it was a very deteriorated surface (Figure 1, left).
Now, I see that appear areas with development of surface thallus (Figure 1, right).
When cut also seems confirmed the presence of surface thallus. One poorly developed thallus.


It would then be C.viride. In two different states of development: young apothecia (brown) and mature (black)?


what do you think?


Thanks


Susana

  • message #26194
  • message #26194
  • message #26194
Alain GARDIENNET, 11-12-2013 22:16
Alain GARDIENNET
Re : Calicium sp

It's coming more difficult... often Caliciales are associated.


It's not sure that the green granular thallus is the one of  the two caliciales (perhaps a third one or another lichen). Calicium viride has a green thallus sometimes granular, but some authors give a different spore's ornementation (I read it could be  partially spiraled in C. viride, but sometimes it's said it could be with irregular cracks). Not easy.


Do you want keys for this genus ?


Alain


 

Garcia Susana, 11-12-2013 22:34
Re : Calicium sp
Hi Alain

I used information found on the Internet:
- KEYS TO GENERA AND SPECIES OF Caliciales IN NORWAY (http://www.thavibu.com/caliciales/keyes.htm) and
- Http://lichenportal.org/portal/taxa/index.php?taxon=51834&taxauthid=1&proj=1 for descriptions.


If you have additional information, I would like to receive it.


Thank you very much, greetings


Susana

Alain GARDIENNET, 23-06-2018 22:49
Alain GARDIENNET
Re : Calicium sp

Hi Susanna,


A few days ago, I found the same lichenized fungus. I think it's Calicium glaucellum. But apothecia shloud be pruinose (white) . I will post photos in database.


Alain

Garcia Susana, 26-06-2018 13:05
Re : Calicium sp
Gracias Alain, un saludo

Susana