10-06-2026 12:54
Steve ClementsBonjour encore, Pouvez-vous m'aider, s'il vous pl
09-06-2026 18:32
Camille MertensSur morceau de roseau immergé 0,5 - 0,7 mm de dia
10-06-2026 23:08
éric ROMERO
Bonjour tous, Je vous propose un Mollisia trouvé
10-06-2026 21:16
François Freléchoux
Bonsoir,Le dernier du jour, en attendant votre avi
10-06-2026 21:07
François Freléchoux
Toutes les tiges de gentianes jaunes de l'an passÃ
10-06-2026 13:41
François Freléchoux
Bonjour à nouveau, Voici une trouvaille d'hier.
10-06-2026 11:53
Steve ClementsBonjour, This disco is abundant on dead stems of
10-06-2026 10:45
François Freléchoux
Bonjour à nouveau, Encore une détermination qui
08-06-2026 10:16
Spooren Marco
I don`t have a clou about this fungus,it is not in
10-06-2026 09:24
François Freléchoux
Bonjour, J'imagine que cette détermination ne do
Sub-millmeter whitish apothecia on subalpine humus
Edvin Johannesen,
02-09-2021 13:49
These tiny apothecia (less than 1 mm) were found in a moist depression under Salix in a mountain region in Central Norway. The substrate is nearly-decomposed plant material. The macro photos are of fresh specimen. Unfortunately, it took som time (in the fridge) before I was able to do microscopy, so deliquescence has started. I was however able to find mature asci and spores (photos in water). Spores measure typically 11x4 microns. Multiple guttules (or spore bodies?) are seen towards the poles. Asci IKI- as far as I can see. Is it possible to ID (at least to genus) from this limited information?
Thanks.
Mirek Gryc,
02-09-2021 16:08
Re : Sub-millmeter whitish apothecia on subalpine humus
Hi Edvin
Pezoloma?
Mirek
Edvin Johannesen,
02-09-2021 20:23
Re : Sub-millmeter whitish apothecia on subalpine humus
That's an interesting proposal, Mirek. A genus I have not encountered before. I will check further. Sad to say, the specimen is now in a poor condition. Thanks!
Hans-Otto Baral,
02-09-2021 22:02
Re : Sub-millmeter whitish apothecia on subalpine humus
LBs are for sure in the spores (you can test it with KOH, they resist). But how are the paraphyses? are they still alive and do they contain VBs?
Edvin Johannesen,
03-09-2021 14:34
Re : Sub-millmeter whitish apothecia on subalpine humus
Thanks, Zotto. I was happy to find one apo apparently in good shape, and have studied it in water, KOH and Lugol. Some additional/corrected information.
1. The spore LBs resist KOH
2. Paraphyses contain VBs. These disappear in KOH and the paraphyses also become thinner in KOH.
3. Asci vary in being uni- or biseriate. Also the number of spores seem to vary, the normal being 8 (uni- or bi). In some asci the spores spread througout the asci, in other they tend to aggregate towards the apex.
4. Ascus apparatus is hemiamyloid (brownish in Lugol).
New photos are all in water (except the last one, in Lugol). I had to use phase contrast to get a clear image of the paraphyse VBs.
Does this help?
Hans-Otto Baral,
03-09-2021 22:10
Re : Sub-millmeter whitish apothecia on subalpine humus
Interesting! Could be a Pezoloma indeed. But I see no VBs. Your phase photo seems to refer to dead paraphyses. In water under bright field there are no apparent contents.
Edvin Johannesen,
03-09-2021 23:43
Re : Sub-millmeter whitish apothecia on subalpine humus
OK, I learn every day :)
Mirek Gryc,
04-09-2021 07:02
Re : Sub-millmeter whitish apothecia on subalpine humus
Hi
In fact ascomata already heavily damaged but I think the pictures show the contents paraphyses.
I allowed Edvin's photo correction.
Mirek
In fact ascomata already heavily damaged but I think the pictures show the contents paraphyses.
I allowed Edvin's photo correction.
Mirek
