07-03-2026 13:06
éric ROMERO
Bonjour tous, Sur cône d'épicea fortement imbu,
05-03-2026 16:30
François BartholomeeusenDear forum members, On the 2nd of February 2026,
06-03-2026 09:41
Alain GARDIENNET
Hi forum, I'm now looking for another reference c
05-03-2026 10:07
Hulda Caroline HolteHello, I found and collected this species growing
19-02-2026 17:49
Salvador Emilio JoseHola buenas tardes!! Necesito ayuda para la ident
03-03-2026 20:34
Miguel Ángel Ribes
Good eveningThese small, amphora-shaped perithecia
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?