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Yanick BOULANGER

BonsoirRécolté par un ami sur dans un tas de bra

29-03-2025 09:08

Martine  Vandeplanque Martine Vandeplanque

Bonjour.J’ai essayé d’étudier un Daldinia.Qu

30-03-2025 10:24

Gonzalez Garcia Marta

Good morning, I would like to know the opinion of

01-04-2025 10:35

Yanick BOULANGER

BonjourSur bois très pourriApothécie 0,2 - 0,5 m

31-03-2025 17:01

akcay mustafa emre

Hello everyone, My name is Mustafa Emre Akçay, a

30-03-2025 12:41

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia (España), r

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éric ROMERO éric ROMERO

Bonjour, J'ai besoin d'une confirmation ou infirm

29-03-2025 21:13

Tomaz Vucko Tomaz Vucko

Hello! I found this Cistella on old stem of Impa

29-03-2025 06:21

Francois Guay Francois Guay

Hi! I found this interesting tiny ascomycete on i

29-03-2025 05:45

Sebastien Basso

Hello, I'm conducting a mycological inventory in

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Helvella aff. elastica
Nicolas VAN VOOREN, 26-09-2011 22:02
Nicolas VAN VOORENBonsoir.
Voici une helvelle intéressante, récoltée parmi des mousses très humides, dans une tourbière de montagne (alt. 1100 m). Les caractères microscopiques sont compatibles avec H. elastica (cf. PDF), mais macroscopiquement cela me semble différent... Certains spécimens peuvent devenir très luxuriants.
P.-A. Moreau m'a dit qu'il a déjà récolté plusieurs fois ce taxon, toujours dans un milieu similaire.
Quelqu'un a-t-il déjà récolté cette helvelle ?

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Here is an interesting helvella, collected among wet mosses, in a peat in mountain (alt. 1100 m). Microscopic features are compatible with H. elastica, but macroscopically it seems different... Some specimens could become very luxuriant.
P.-A. Moreau told me that he already collected several times this taxon, always in a similar environment.
Is there anyone who has already gathered such a Helvella species?

  • message #16329
Neven Matocec, 27-09-2011 10:28
Neven Matocec
Re : Helvella aff. elastica
Hello Nico! Although I am still in terrrrrible rush...I just wanted to respond quickly. To me it is normal Helvella latispora. Macroscopically would perfectly fit with macro-structures (esp. margin that is inrolled in maturity). The stipe context should be more or less solid. My H. latispora has significantly lesser spore Q values than H. elastica and has spores normally up to about 20,0 ym long and 12,5-14,8 ym diam (which would also nicely fit your collection). Longer spores are real outlayers when statistically suficient measurments are taken from living spore prints. It is further cyto- & histochemically rather different from H. elastica which must place it rather distant from it phylogenetically (this will be soon published by me & Ivana I hope). Cordially,
Neven
Nicolas VAN VOOREN, 01-10-2011 18:36
Nicolas VAN VOOREN
Re : Helvella aff. elastica
Thank you Neven.
I do not recognize H. latispora in my collection, but I do not reject this hypothesis. The previous collections of H. latispora that I studied were always a bit furfuraceous (with small chains emerging from the ectal excipulum) and the outside colour were white. The ecology is also different.
You can see a good photograph, page 43, in my article published in Bulletin mycologique et botanique Dauphiné-Savoie #199.
It's interesting to note that on the Italian forum Acta Fungorum, Mario Filippa think my collection could be the same fungus that he names H. stevensii.
Neven Matocec, 03-10-2011 23:06
Neven Matocec
Re : Helvella aff. elastica
Hi again...!

As I'm not at home at the moment I cannot check some details but as long as I remember I considered H. stevensii to be the syn. of H. latispora. Had a number of transitions between hairy and smooth vestiture on both pileal and/or stipal exc. surface. Also the exc. surface colour may vary considerably (due to quantity and extent of diffuse cell pigment....

But - I will check back later (soon I'll be +/- home and finally out from extra rush for a week or two).

Neven