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14-04-2008 16:18

ANGELOS PAPADIMITRIOU

I'm between Helvella fusca, H. lacunosa, and maybe

14-04-2008 00:51

Miguel Ãngel Ribes Miguel Ángel Ribes

Good night. How do you obtain good tints of Lac

13-04-2008 16:49

Miguel Ãngel Ribes Miguel Ángel Ribes

Hi. This is my first time. I hope do it not so bad

13-04-2008 10:41

VASILEIOS KAOUNAS

It was found in earth in the banks of rill with P

12-04-2008 22:17

Alain GARDIENNET Alain GARDIENNET

Bonsoir, Suite à plusieurs demandes, je viens d

12-04-2008 20:13

Enrique Rubio Enrique Rubio

Quel c'est le nom correct pour cette Morchella riv

12-04-2008 16:02

Yannick Mourgues Yannick Mourgues

Bonjour. Cet asco se présente sous la forme de

11-04-2008 20:32

Enrique Rubio Enrique Rubio

Quelle est le nom (et les auteurs) correcte pour l

11-04-2008 13:05

ISABELLE FERRAND

Bonjour à tous, Hier j'ai trouvé sur une branch

10-04-2008 21:30

ISABELLE FERRAND

Tout d'abord bonsoir à tous. Ca fait un moment q

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Helvella_sp.
ANGELOS PAPADIMITRIOU, 14-04-2008 16:18
I'm between Helvella fusca, H. lacunosa, and maybe even H. crispa for this Helvella sp. What do you think?

Is there some (publicly available) monograph or other text on Helvellas that could help one distinguish between species? I'd appreciate if anyone could provide me with it.

Thanks.
  • message #4502
JJ WUILBAUT, 14-04-2008 16:20
Re:Helvella_sp.
je dirais Helvella fusca
Mario Filippa, 14-04-2008 16:36
Re:Helvella_sp.
It seems Helvella fusca. You should control the underside surface, it should be venose-reticulate. H. fusca is typical in spring under Populus. The ectal excipulum is made of a thin layer of clavate cells (almost like an hymenium of basidia). In H. crispa the ectal excipulum is more thick and complex, with tufts of fascicled hyphae projecting out from surface, thus the surface at bare eye is finely velvety (naked in H. fusca and H. lacunosa). Helvella crispa is an autumnal species.
From H. lacunosa, the difference is thin. Only the colour and habitat, may be. But it is important to note that the brown colors of H. fusca are due to an intracellular pigment. Helvella lacunosa has almost only wall pigments. It is true that the reticulated pattern of the underside of H. fusca is typical, but sometimes also H. lacunosa is veined (but in a less charachteristic way).
There are two monograph on Helvella: Dissing 1966 The genus Helvella in Europe, and Häffner 1987 Die Gattung Helvella. I don't know if there is still some copies to sell.
If you need more, I am here.
Miquel Angel Perez-De-Gregorio, 14-04-2008 16:54
Re:Helvella_sp.
Dear Angelos, I think also in Helvella fusca
ANGELOS PAPADIMITRIOU, 14-04-2008 17:02
Re:Helvella_sp.
Mario, thank you so much for your detailed and helpful answer, as well as for your willingness to help further. JJ and Miquel Angel, thanks for your answers, too.

I've just taken a picture of the underside surface and I think it is definitely a H. fusca. By the way, it was found (along with several more) under poplars (Populus) a couple of days ago.
  • message #4509
Nicolas VAN VOOREN, 14-04-2008 17:09
Nicolas VAN VOOREN
Re:Helvella_sp.
We gathered this species on last saturday, under Populus. I posted a new entry in the Ascofrance database but it's not yet published...
Mario Filippa, 14-04-2008 17:09
Re:Helvella_sp.
There is also a monographic revision of the Helvellaceae by Abbott & Currah in Mycotaxon 62: 1-125. The descriptions are shorter, and the species concept to my personal judgment is a little too large, but the work can be very useful. You can find it free at
http://194.203.77.76/librifungorum/SearchResult.asp?ItemID=280

Mario Filippa, 14-04-2008 17:15
Re:Helvella_sp.
With that kind of underside, there is no doubts left. Helvella fusca.
Nicolas VAN VOOREN, 14-04-2008 17:24
Nicolas VAN VOOREN
Re:Helvella_sp.
You're right Mario, the article of Abbott & Currah is very interesting but most of the European taxa are "undervalued" (this is the same for the genus Gyromitra).
I hope you'll publish the next monograph of Helvella :-)
ANGELOS PAPADIMITRIOU, 14-04-2008 17:46
Re:Helvella_sp.
Again, many thanks to all of you nice people!
Mario Filippa, 14-04-2008 18:11
Re:Helvella_sp.
Dear Nicolas, it is somewhat strange for me to read you in English...!
Ciao
Nicolas VAN VOOREN, 14-04-2008 18:23
Nicolas VAN VOOREN
Re:Helvella_sp.
All the messages were in English, so... mais si tu veux, je peux continuer en français ! :-)
Jacky Launoy, 14-04-2008 21:07
Re:Helvella_sp.
J'ai suivi la discution à propos de Helvella fusca. J'ai également trouvé à la base d'un peuplier une quarantaine d' Helvella que j'avais classé comme H. crispa faute de mieux. Je ne possède aucune litterature dans laquelle H.fusca est décrite surtout la microscopie. La face intérieure veineuse était un aspect que je n'avais observé.
Jacky Launoy, 14-04-2008 21:58
Re:Helvella_sp.
Helvella cf fusca
  • message #4525
Mario Filippa, 15-04-2008 10:04
Re:Helvella_sp.
Jackyi, la photo n'est pas trancheante... Tous les 40 ascomes étaient comme ça...?
JJ WUILBAUT, 15-04-2008 10:10
Re:Helvella_sp.
il a des photos plus parlantes, sinon, ce n'aurait pas été facile pour moi de les reconnaître