Observation 119932: Helvella crispa (Scop.) Fr.
When: 2012-12-08
Who: zaca
No herbarium specimen

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Recognized by sight
54% (1)
Eyes3
Recognized by sight

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Comments

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Thanks, Nicolas, for
By: zaca
2013-01-16 04:39:42 JST (+0900)

opinion and explanation.

Your collection
By: Nicolas VAN VOOREN (NicoV)
2013-01-15 17:37:06 JST (+0900)

The spore size is comparable between H. crispa and H. fusca, but the real differences are macroscopic. H. fusca has caps totally brown to dark brown (chocolate) and possesses prominent veins on outer surface. So I think your collection is H. crispa.
To see pictures of H. fusca, take a look on Internet; for example:
http://www.mycodb.fr/...
http://ascofrance.fr/...

Regarding the question posed …
By: zaca
2013-01-12 07:40:15 JST (+0900)

by Nicolas concerning the habitat of this observation, I can say the following: this is a piece of land were the native vegetation, mainly consisting of Quercus coccifera, was substituted by other tree, namely Quercus suber (one of our common and widespread Quercus tree whose leaves one can see in the photos), Eucaliptus, and some others. Not farway from the place of the observation some Populus alba trees exist (where I’m used to observe Agrocybe cylindracea =A. aegerita). Of course this doesn’t mean much in relation to the classification of this specimen. It seemed to me a bit different from the common and widespread H. crispa, mainly due to the color of cap, which is darker and “more brownish” than I used to see in H. crispa. I´m sure I also found very similar specimens to this one in different habitats, for sure free from poplar, and if I will find one I’ll create another observation with it.
In the meantime I took some photos from the just made microscopy, which now I add to this observation. I’m not very familiar with the microscopic data of Helvella spp. and so they have no special meaning for me. For the sporesI get the following values with the aid of Piximètre:
13 [15.6 ; 17] 19.6 × 9.4 [11 ; 11.9] 13.5 µm
Q = 1.2 [1.4 ; 1.5] 1.7 ; N = 23 ; C = 95%
Me = 16.3 × 11.4 µm ; Qe = 1.4.

The previous comment by Evica
By: zaca
2013-01-12 04:04:02 JST (+0900)

is misplaced. Maybe it concerns one of her observations.

Habitat
By: Nicolas VAN VOOREN (NicoV)
2013-01-12 01:39:43 JST (+0900)

Can you precise that habitat? H. fusca is rare species, growing under Populus trees.
I do not recognize this fungus on your pictures, I think it could be simply H. crispa

Created: 2012-12-15 04:08:13 JST (+0900)
Last modified: 2013-01-16 06:09:04 JST (+0900)
Viewed: 113 times, last viewed: 2016-05-04 21:44:51 JST (+0900)
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