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07-12-2019 22:22

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas fotos de un asco que hemo

11-12-2019 23:29

Juuso Äikäs

I found these in a Picea abies dominated forest in

11-12-2019 23:25

Ethan Crenson

Hello all,This was found by a friend in New York C

11-12-2019 22:21

BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et tous,Pourriez-vous me confirm

09-01-2015 12:57

Alan Rockefeller Alan Rockefeller

I found this in a semitropical area of Queretaro,

05-01-2019 14:57

Edvin Johannesen Edvin Johannesen

These orange "jelly"-like apothecia grow at the ap

11-12-2019 16:42

BERNARD CLESSE BERNARD CLESSE

Bonjour à toutes et tous,Même s'il ne s'agit pas

05-12-2019 19:35

Ibai Olariaga Ibarguren

Dear colleagues, I was wondering if anyone could

09-12-2019 12:05

PASCAL DUBOC

Bonjour cette colonie de pustules orange sur vieu

09-12-2019 21:35

William Slosse William Slosse

Yesterday I found this species on the underside of

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Anthostomella (?) on Berberis
Enrique Rubio, 04-07-2013 14:02
Enrique RubioDear friends
 
Under a melanized, epidermial blackish tissue with inconspicuous perithecial mounds, we have collected these inmersed, isolated. not really stromatic perithecia up to 0.2 mm in diameter under a clypeate structure.
The long cylindrical 8-spored asci have an appical apparatus IKI bb and the brownish (at maturity) ascospores have a germ-slit full spore lenght and they have not visible appendages.


The fungus was on still attached branches of Berberis vulgaris at 1700 m of altitude.

With the classic keys I arrive to the genus Anthostomella. What do you think?    

Thanks again 

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Jacques Fournier, 04-07-2013 14:26
Jacques Fournier
Re : Anthostomella (?) on Berberis
Hola Enrique,
possibly Anthostomella but not a common species at first view. I checked Lu & Hyde's monograph to no avail. Could you be more specific about the clypei, are they separate or do they form a superficial pseudostroma by coalescing? Are the asci short or long pedicellate? Do ascospores have a mucilaginous sheath? something to test in India ink, just add a small drop to the edge of a water mount, it's better than to observe directly in India ink, otherwise dilute it.
Buena suerte!
Jacques
Enrique Rubio, 04-07-2013 17:49
Enrique Rubio
Re : Anthostomella (?) on Berberis
Hi Jacques


There are a superficial, thin and continuous blackish pseudostroma over the isolated perithecia, but at this level it seems to be thicker.
I have seen any mucilaginous sheath or appendages in china ink or nigrosine. The asci are shortly stipitate (i.e 55 microns long for the pars sporifera vs 35 for the stipes)
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Jacques Fournier, 04-07-2013 18:20
Jacques Fournier
Re : Anthostomella (?) on Berberis
thanks for the information, after checking the key in the monograph I failed to find a match. Anyway the continuous pseudostroma is not typical of Anthostomella. It rather recalls the fungi placed in Lopadostoma subgenus Anthostomopsis Rappaz (1995), as do the ellipsoid-equilateral ascospores. There are only three species in that subgenus, one L. flavoviride has ascospores that might fit but the peudostroma is said to be green black. Is that the case?
Tell me if you don't have Rappaz paper.
Cheers,
Jacques
Enrique Rubio, 04-07-2013 18:51
Enrique Rubio
Re : Anthostomella (?) on Berberis
Hi Jacques

Yes. I have Rappaz's papier. Maybe you are right because some little areas of the pseudostroma have faintly yellowish/greenish hues but only at the surface.
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Enrique Rubio, 04-07-2013 18:54
Enrique Rubio
Re : Anthostomella (?) on Berberis
Can you see them in the image?
Jacques Fournier, 04-07-2013 19:06
Jacques Fournier
Re : Anthostomella (?) on Berberis
hum, not striking! I would not advise you to use this name, maybe someone will have a better idea.
Cheers,
Jacques
Enrique Rubio, 04-07-2013 19:22
Enrique Rubio
Re : Anthostomella (?) on Berberis
Of course! They are not so conspicuous! 

Thanks, Jacques