14-05-2024 09:19
Hans-Otto BaralHi, I want to announce for next Sunday 17.00 middl
13-05-2024 12:48
Eduard OsieckAfter eight years (*) I found the same apiosporous
11-05-2024 18:08
B Shelbourne• Mollisia on tree leaves: On dead Quercus leave
12-05-2024 11:48
Michel HairaudBonjour , Voici une récolte d'une Rhytismataceae
10-05-2024 17:40
Anna KlosGood afternoon, Thursday during an inventory we f
11-05-2024 00:33
Ethan CrensonI'm not entirely sure that Encoelia-like is the ri
07-05-2024 00:04
Ethan CrensonA friend found these black gelatnous cups on a twi
Macro : apo with a red to dark red hymenium, excipulum dark. Same appearance than Rhytidisteron hysterinum when dry.
Found on dead branches of Cytisus oromediterraneus.
Micro : spores hyalines, 4-celled, 15,4-19x4,7-5,6 um Q=3,2-3,6
Ascus with bisseriate spores, IKI-, croziers+, 103-123x10,6-10,8 um
Paraphyses filiform, hyaline, without pigmentation, apex sometimes stuck in a red carotenoid gel. lI haven't be able to make a cross section because apo are too gelatinous.
See attached pictures.
So, I think this is clearly a Durella specie.
On Zotto's CD, I found a decription of Durella "aurantionigra" that fits very well with my specie. Is-it still a workname or has-it been described ?
What do you think about all of that ?
Yannick
?
You did no figure the spore contents, though I fear they are not constant in this group. But they are always there, lipid content around 4.
The anamorph could help in solving the problem if there are several species or not. The genus Plasia was found by Sherwood as anamorph, and I have data on associated sporodochia with different ?conidia, in the case you find something similar to the apothecia but with conidia inside.
Zotto
No, I haven't seen any oil drop inside these spores. I have checked it now.
Sorry, I don't understand your first sentence : "I am not sure if there is only one variable species D. atrocyaneam?". What do you meen ? D. aurantionigra/atrocyaneam ?
I'm not able to cultivate the anamorph. So, do you suggest to name it as Xylogramma sp. ?
Amitiés.
Yannick
OK, no I understand. I have looked at your CD... So you prefer Xylogramma atrocyanea ? But, has this specie a red hymenium ? On your pictures, all is dark. Mine are red to dark red.
Yannick
If your material is alive, you should see the oil drops in the spores. Ifr it is dead you need to mount in KOH, then you will see them. If there aren't any, your collection is perhaps something else.
Zotto
Amitiés.
Yannick
Zotto
i wanna ask you about the embedded paraphyses in D. atrocyanea? is it a character?
thnkss
In X. atrocyanea the olivaceous exudate dissolves in KOH very similar as in Claussenomyces. In Durella no such dissolutiun is observable. So I considered the possibility of a relation to that genus.
Xylogramma has a protruding, +/- toothed margin, possibly the young apothecia are closed and break into teeth.
Zotto