04-11-2025 09:07
Josep Torres
Hello.A suspected Hymenoscyphus sprouting on a thi
04-11-2025 12:43
Edvin Johannesen
Hi! One more found on old Populus tremula log in O
03-11-2025 21:34
Edvin Johannesen
These tiny (0.4-0.5 mm diam.), whitish, short-stip
28-10-2025 15:37
Carl FarmerI'd be grateful for any suggestions for this strik
03-11-2025 16:30
Hans-Otto Baral
Hello I want to ask you if you have found this ye
Hyaloscypha ?
Ethan Crenson,
11-04-2019 06:24
In addition to the features I was expecting to see, I also saw a number of long needle-like spores (conidia perhaps?) measuring 18-30 x 1-1.5µm. Also, a single 1 septate spore slightly constricted at the center (contamination?).
I suspect that I have not provided enough information to ID this collection to species, but perhaps someone can help point me in the right direction.
Thank you!
Kosonen Timo,
11-04-2019 07:39
Re : Hyaloscypha ?
Hi,
Looks like Hyaloscypha all right. I think you have hairs at the margin of the apothecium in picture 11/12. The "hairs" in picture 12 are empty asci. The shape of the whole hair could help us here. Try cutting a tiny piece from the rim in order to get a good "hair to excipulum ratio", otherwise the hairs easily disappear under/on top of the hymenium/excipula. Squeezing might help but you easily just squash everything into a frustrating mess. Congo red might help also and give it some lugol / MLZ just to check the basic reactions.
so far you know:
-hardwood
-spore shape & size
-asci simple septate (no crozier)
-hairs pretty thin walled, not extremely long, smooth(?)
...if you follow the Hyaloscypha key or just glance through the common species and skip the ones with bent/glassy hairs you should be able to narrow it down to a small number of species.
Timo
Ethan Crenson,
11-04-2019 17:35
Re : Hyaloscypha ?
Timo,
Thank you for your very helpful comments. Is the key you recommend the synoptic key in "A monograph of Hyaloscypha and allied genera" by Seppo Huhtinen? I will make another attempt at isolating the hairs using your advice.
Ethan
Kosonen Timo,
12-04-2019 06:21
Re : Hyaloscypha ?
Yep, that's the one.
---taking an another look at the picture 12. It could be a hair in the end, not an asci. But it has had a rough life, so try to find nice & intact hairs somewhere. :-)
T