Accès membres

Mot de passe perdu? S'inscrire

24-03-2025 14:58

Karl Soler Kinnerbäck

Hi,Dark, erumpent disco on Vaccinium myrtillus, ce

24-03-2025 16:20

Henri Koskinen

I found this very small Elaphomyces on a wet almos

23-03-2025 20:27

Thomas Flammer

I have no idea where to startsubstrate: deciduous

19-03-2025 17:47

Philippe  Larue Philippe Larue

Bonjour à tous, chaque année à l'approche du p

23-03-2025 10:09

Michel Hairaud Michel Hairaud

Bonjour, Hi to everyone, The English text is avail

23-03-2025 01:00

Juuso Äikäs

These little black pyrenos were growing on bark of

20-03-2025 22:35

Yanick BOULANGER

BonsoirJ'ai récupéré cet ascomycète d'un amiJe

19-03-2025 09:29

Michel Hairaud Michel Hairaud

Bonjour, Récolté sur hépatiques colonisant un

21-03-2025 19:32

Benko Gabor Benko Gabor

Dear Ascofrance,I would like to ask for your help.

16-03-2025 11:04

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Je cherche une copie de l'article suivant:

« < 22 23 24 25 26 > »
Lachnum morthieri vs L. nudipes var. minor
Eduard Osieck, 08-12-2016 21:34
Lachnum morthieri has been collected in the Netherlands for the first time. The identification was based on an earlier thread on this forum: http://www.ascofrance.com/forum/2449/lachnum-sur-filipendula-ulmaria and on a drawing of Baral (HB767). However, I am confused by the name Lachnum morthieri because of the comment made by Dennis (1949) following his description of Lachnum nudipes var. minor:

"Le Gal (1939) described this form as D. morthieri (Cooke) Sacc., recorded it on Eupatorium (?) and Mentha silvestris but added that 'elle semblait n'être qu'une forme grêle de' D. nudipes. No Dasyscypha remains on Cooke's specimen of Peziza morthieri but his accompanying sketches show short cylindrical hairs bearing a large apical crystal mass and filiform paraphyses not exceeding the asci. A sketch of two cup-shaped apothecia is labelled "sulphur colour'. The collector's note reads 'Peziza ad caules Senecionis'. This is clearly not the fungus of Le Gal."


Wouldn't Lachnum nudipes var. minor Dennis be a better name for this taxon?


Thanks for any help, may be I have missed some more recent reference.


Eduard

Hans-Otto Baral, 08-12-2016 21:47
Hans-Otto Baral
Re : Lachnum morthieri vs L. nudipes var. minor
Hi Eduard
indeed L. morthieri is a doubtful taxon. But I think that L. nudipes var. minor has never been reexamined from the type. I wonder whether it has croziers or not. L. nudipes is with croziers and a species that also grows on Filipendula and which I called "subnudipes" has much smaller spores and inamyloid asci without croziers. But I fear there exist more species. What I identified in 1976 as morthieri is such a third species, but I never clarified the croziers situation.

Did you document any collection?
Zotto
Eduard Osieck, 09-12-2016 22:23
Re : Lachnum morthieri vs L. nudipes var. minor
Hi Zotto,
Thank you for your prompt reaction and comments. I have contacted the person who made the collection for further details and I will come back on this shortly.
Eduard
Eduard Osieck, 12-12-2016 14:11
Re : Lachnum morthieri vs L. nudipes var. minor
Here are some details and photos of the above-mentioned collection (Winterswijk, October 2016):

Ascomata 0,5 – 0,6 mm Ø, stipe 0,2 mm, hymenium and hairs pale yellow. Hairs 60-70 x 4-5 mu, encrusted, with single, striking large crystal on top (10-13 mu). Paraphyses beyond asci, lanceolate, width 5-6 mu. Spores (6-) 8-10 x2 mu, sometimes slightly curved, oil 1. Asci 40-50 mu, croziers not checked. Growing on herbaceous stem or twig.
  • message #46075
  • message #46075
Hans-Otto Baral, 12-12-2016 16:17
Hans-Otto Baral
Re : Lachnum morthieri vs L. nudipes var. minor
Can you exclude Lachnum nudipes? I know this species only from Filipendula, perhaps you can exclude this plant?
Eduard Osieck, 22-12-2016 12:20
Re : Lachnum morthieri vs L. nudipes var. minor
Lachnum nudipes was excluded on the basis of the features mentioned in the Lachnum key:

Sp. 6-11/1,2-1,5 µm, oil content 1, A. 40-50 µm long, Ap. 0,8-1 mm, stipe 0,3-0,5 mm
............................................................................................................... L. morthieri
Sp. 9-15/1,7-2,3 µm, oil content 0, A. 65-80 µm long, Ap. 0,7-2,2 mm, stipe 1-2,5 mm ............................................................................................................... L. nudipes

The material was collected in a regenerating peat bog area where the occurrence of Filipendula is unlikely, so this substrate can be excluded.

Eduard
Hans-Otto Baral, 22-12-2016 13:00
Hans-Otto Baral
Re : Lachnum morthieri vs L. nudipes var. minor
o.k., but note that my ascus measureents are in living state. 40-50 in dead state would be about 60-70 in livin state.