14-07-2025 11:20
Michel Hairaud
Bonjour, Voici une espèce de (?) Hyaloscyphace
16-01-2023 21:31
Riet van Oosten
Hello, Nearby the find of Calycina claroflava on
14-07-2025 17:55
Yanick BOULANGERBonjourAutre dossier laissé en suspendJe viens de
14-07-2025 11:17
Yanick BOULANGERBonjourJ'ai un dossier Jackrogersella qui est rest
14-07-2025 15:52
Gernot FriebesHi,I wanted to share this collection on Rubus idae
14-07-2025 13:37
Gernot FriebesHi,do you think this collection could be R. ulmari
12-07-2025 16:45
Thierry Blondelle
Bonjour à tous,J'avais d'abord pensé à des stro
05-07-2025 12:38
Åge OterhalsI found this pyrenomycetous fungi in pine forest o
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
