18-07-2025 23:03
Josep Torres
Hello.Fruitings between 51 and 130 microns in tota
16-07-2025 17:34
Bernard Declercq
Hello,I have trouble distinguishing above mention
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
Hymenoscyphus, Rutstroemia, Sclerotinia, Ciboria?
Ethan Crenson,
05-05-2021 23:14
Hello again,
A friend of mine found these small cup fungi in a cemetery in NYC last weekend. They are just under 1cm in diameter and have quite a long, slender stipe. They appear to be fruiting from the soil. Another friend provided the microphotos and data. So this is what I have...
Long stipe (3x length of cap), asci up to 150m long.
Spores in water
11.8 x 5.8µm
12.4 x 6.4µm
12.7 x 6.5µm
13.7 x 6.7µm
11.8 x 5.8µm
12.4 x 6.4µm
12.7 x 6.5µm
13.7 x 6.7µm
11-12 x 5-5.5µm (in cotton blue)
Ascus tips turn blue in Lugol's
Any ideas?
Thanks,
Ethan
Hans-Otto Baral,
06-05-2021 10:21
Re : Hymenoscyphus, Rutstroemia, Sclerotinia, Ciboria?
Well, this is of course a big sclerotiniaceous species. Important would be to dig out the base for a possible sclerotium. Was there any?
I suggest Sclerotinia (Dumontinia) tuberosa, but this would require living elements, particularly paraphysis and spore contents. The number of nuclei can be viewed in a water mount when spores are alive (they could still be!) under a rather closed aperture of the condensor, phase contrast etc.
Ethan Crenson,
06-05-2021 21:58
Re : Hymenoscyphus, Rutstroemia, Sclerotinia, Ciboria?
Thank you! I don't have this in my possession, but I will find out if there are living spores and if there are, how many nuclei are present. Very exciting! Sclerotinia sp. would be new for New York City.
Ethan Crenson,
09-05-2021 17:50
Re : Hymenoscyphus, Rutstroemia, Sclerotinia, Ciboria?
Zotto, I have just received two photos which I think show living spores with two nuclei...
Hans-Otto Baral,
09-05-2021 21:09
Re : Hymenoscyphus, Rutstroemia, Sclerotinia, Ciboria?
This looks much better but I think you went on the tracks of the very old researchers who mistook oil drops for nuclei :-)
The oil drops are important for identification indeed. They are a bit latrge but still too small for Stromatinia rapulum I think, another candidate. So there is no chance to know if the stipe emerges from a conspicuous sclerotium?
Ethan Crenson,
09-05-2021 21:24
Re : Hymenoscyphus, Rutstroemia, Sclerotinia, Ciboria?
Yes, I guess so! I don't think I have ever located nuclei in a spore. I'm not sure how it's done. There were only two fruiting bodies collected and without digging into the substrate. I'm hoping this will turn up again in a conspicuous location.
Mirek Gryc,
10-05-2021 09:45
Re : Hymenoscyphus, Rutstroemia, Sclerotinia, Ciboria?
Hi
I do not know if Zotto shares my opinion but at Dumontia, the nucleus in the spores are very poorly visible.
It seems to me that the spores are very suitable for the species that Zotto proposes.
Ask a colleague: Is Anemone nemorosa or another genre from this kind in this place.
It seems to me that the spores are very suitable for the species that Zotto proposes.
Ask a colleague: Is Anemone nemorosa or another genre from this kind in this place.
Mirek
Hans-Otto Baral,
10-05-2021 10:07
Re : Hymenoscyphus, Rutstroemia, Sclerotinia, Ciboria?
It is right that the 4 nuclei in tuberosa are less distinct as the two hardly larger ones in sclerotiorum or binucleata. Here two photos
Mirek Gryc,
10-05-2021 11:05
Re : Hymenoscyphus, Rutstroemia, Sclerotinia, Ciboria?
Oh yes, in the second picture you can see clearly :)
In my material usually four it was hard to see, and especially hard to take a picture so that they are all at the same time visible.
Due to the fact that it is a frequent species, I did not devote too much time.
Thank you for the pictures.
Mirek
In my material usually four it was hard to see, and especially hard to take a picture so that they are all at the same time visible.
Due to the fact that it is a frequent species, I did not devote too much time.
Thank you for the pictures.
Mirek
Ethan Crenson,
10-05-2021 17:49
Re : Hymenoscyphus, Rutstroemia, Sclerotinia, Ciboria?
Thank you both. That's very helpful. Now at least I know what I'm looking for if I ever have a chance to study this asco again. I'm not sure of any plants associated with this collection, but it is a cemetery, so Anemone is certainly possible.