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30-04-2024 16:22

François Bartholomeeusen

Dear forum members,On April 25 2024, I found one f

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Hello, Found by Laurens van der Linde on Rubus fr

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éric ROMERO éric ROMERO

Bonjour, Une question à propos de la réaction a

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Ethan Crenson

Hi all, Found late last week in a New York City p

29-04-2024 21:32

Robin Isaksson Robin Isaksson

Hi! Found in Sweden. Ascomata with haris, se

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F. JAVIER BALDA JAUREGUI

Hello, everyone.An idea for this pyreno, I found u

30-04-2024 16:59

Sylvie Le Goff

Bonjour. Petite pézize récoltée au sol en bordu

30-04-2024 19:43

Gernot Friebes

Hi!We observed this hyphomycete growing between le

30-04-2024 16:08

maurice pelissier maurice pelissier

BonjourTrouvé dans un torrent de montagne au Chir

29-04-2024 21:51

Mathias Hass Mathias Hass

Hi everyone, Found on attached branches of top pa

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Helvella sp.
Godorova Olga, 03-02-2015 17:31
Godorova OlgaHello, dear friends. I've got an interesting Helvella here. First I thought, this should be H. elastica, but it's cap seems to be quite regular and outer surface is velvety. Inner cap surface is smooth, though.
It was found in a wet place in mixed forest, near oak trees.
The spores are quite large, about 25-28*14-16 mkm. The ascos 350-410*20-25 mkm. The paraphyses enlargened up to 7-8 mkm at the tips.
The last three micro pictures is the tissue of the inner, whitish part of the cap.
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Nicolas VAN VOOREN, 03-02-2015 17:40
Nicolas VAN VOOREN
Re : Helvella sp.
I think it's Helvella albella
Godorova Olga, 03-02-2015 17:43
Godorova Olga
Re : Helvella sp.
Thank you.
Do you think, that the spore measures are within a normal range for that species?
As I've seen, that Helvella albella spores are about 20-24*12-14 in "Ascomycete Fungi of North America: A Mushroom Reference Guide" By Michael Beug, Alan E. Bessette, Arleen R. Bessette

Mario Filippa, 04-02-2015 01:18
Re : Helvella sp.

Hi Olga,


first, it is not H. elasticaH. albella is a good idea as Nicolas said, however the spore size seem too large for every species in this group. Quèlet described H. albella with spores 18-20 µm.


And pay attention, it is complicated to compare our collections with American ones, it may exist more taxa that we can think.


We have made several collections with the same habitus of your specimens, but with smaller spores, mostly 19-23 µm long, more frequent in mediterranean habitat, but always under oaks as your specimens. So, forgive me if I ask this, check the measurements one more time.


An then, it would be nice to know where and when this was collected.


Regards


Mario


 

Carlo Agnello, 04-02-2015 05:59
Carlo Agnello
Re : Helvella sp.
Dear Friends
as you know, I love to call these collections Helvella panormitana ;)
Godorova Olga, 04-02-2015 06:57
Godorova Olga
Re : Helvella sp.
Thank you, Carlo. :)
Thank you, Mario.
They were  collected this Saturday, in a mixed forest near Jerusalem, Israel.
If someone is interested in this samples, I still have them in my fridge. I'll be glad to dry them and send for proper check, as, indeed, I think, in Israel this species was not registered yet. I don't know local mycologists,, who would work on Ascomycetes research currently.
I was already told, that the spores are to big and checked the measures again, but the average numbers are still the same, I think. My microscope in not a professional one, so may be my check is somewhere not exact or wrong, as I measure the length of the picture on the screen in milimeters and then do a calculation to micrometers according to the magnification numbers.
Mario Filippa, 04-02-2015 07:55
Re : Helvella sp.

Well Olga, if from Israel then I think Carlo is right :)


I would be very interested to examine the collection. I send you a mail with my address.


I don't think it's a microscope problem, if the other measurements you take are "normal".


Thank you


Mario

Godorova Olga, 05-02-2015 14:18
Godorova Olga
Re : Helvella sp.
Hello, dear Mario. I have not received an email from you yet. Did you manage to send it?
Mario Filippa, 05-02-2015 23:47
Re : Helvella sp.

Hi,


the mail was sent yesterday morning, however I retry on both adresses (maybe you better delete the addresses from here where every spammer can read)...


Regards


Mario

Godorova Olga, 06-02-2015 05:56
Godorova Olga
Re : Helvella sp.
Thank you, now I've received your letter. :)