09-12-2025 12:06
Andgelo Mombert
Bonjour,Je recherche l'article concernant Hypobryo
07-12-2025 16:07
Arnold BüschlenHallo, ich habe in einer Moos-Aufsammlung (epiphy
08-12-2025 21:04
Mark Stevens"Hello everyone,I'm relatively new to microscopy (
08-12-2025 18:59
Lothar Krieglsteiner
.. found by a seminar-participant, I do not know t
08-12-2025 17:37
Lothar Krieglsteiner
20.6.25, on branch of Abies infected and thickened
16-03-2014 22:00
Ralph Vandiest
Hello,I found this species a few months ago but ha
08-12-2025 13:39
Thomas Læssøehttps://svampe.databasen.org/observations/10572899
Hello everyone,On dead wood of Cytisus scoparius I found a group of tiny apothecia. Does anyone recognizes this species or is familiar with the group in which this species should be found?
Apothecia young barrel-shaped, dark brown and with a white flaky edge around the opening, older cup-shaped, up to 0.5 mm diam., dark brown with still the white edge present, sessile, base broadly attached to the substrate, base blackish brown, hymenium grey when young, older yellowish grey.
Spores 12,5-14,3 x 4,4-5,2 (10 spores meassured),
Asci 87-107x8,-9,5 ?m. J-, with clamps,
Paraphyses thread-like, septated, sometimes splitting, upto 2 ?m diam.
Excipulum composed of (only?) brown, globose thick-walled cells, towards de margin transitioning into hyphae, but I don't know whether this means the apothecia have marginal hairs,
The white flakes consist of microscopically small grains which release immediately in water.
Pretty! I bet this is Cordieritidaceae and that it has glycogen bodies in the spores like Patinella sanguineoatra. And the granules in hymenium are also reminiscent of that species. Yours is of course something else but perhaps related. I would be interested to sequence this, if you can spare piece of the collection.
Thank you,
Adam
Enrique and Zotto, Thanks also for your reply. It's a known species (good to know), but apparently not officially described yet.
Zotto, indeed, when I checked whether the granules would dissolve in KOH, to my surprise, most of the tissue dissolved. I found this rather strange that I was reluctant to mention it (and also to avoid wasting apothecia). I thought I'd wait and see what suggestions would come.
My photos aren't ready yet. I'll send them to you tomorrow and I'll also share them here.
I've now soaked some apothecia and repeated the test. The excipulum discolored slightly (not as strongly as yesterday), and at the beginning only a very fleeting light brown discoloration was visible. Not spectacular or intense.
Does it make any difference to the reaction whether fresh or dried material is used?
Here my pics collected by my friend Javi Mateos on branches of Genista florida still attached to the shrub (may 2023, 1000 m of altitude).
In reality, the apos (up tp 0.6 mm) did not look very 'sanguine'.
The ionomidotic reaction exists, but it was very weak. If anyone needs the photos at higher resolution, please request them from me. I have an ITS sequence that I already sent you. The LSU was invalid and I couldn't use it.
Do you know were the protologue of this species is?