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05-11-2025 11:33

Pierre Repellin

Bonjpur,J'ai trouvé, sur une hampe florale d'Alli

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

03-11-2025 19:41

David Chapados David Chapados

Hi,Does anyone knows which genus could this be? G

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

03-11-2025 16:30

Hans-Otto Baral Hans-Otto Baral

Hello I want to ask you if you have found this ye

01-11-2025 09:14

Francis Maggi

Bonjour,Trouvé sur Xanthoria parietina à Valdebl

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

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Hymenoscyphus calyculus 121015 236
Miguel Ángel Ribes, 10-08-2016 21:31
Miguel Ãngel RibesGood night

This Hymenoscyphus was growing on small herbs of Rumex scutatus. I think it is a common species, but is the first time I see it.

Asci 8 spores, with croziers, euamyloid and with a slight cover in the apex,  (114,8) 116,3 - 123,6 (126,3) × (9,9) 10,2 - 12,4 (13,4) µm; N = 19; Me = 120,3 × 11,4 µm.

Spores more or less navicular with a pointed end and rounded the other one, but sometimes with a small "teeth". Sometimes covered with a partial gelatinous shell, mainly in the acute end, (15) 16,7 - 20,9 (22,9) × (4,5) 4,8 - 5,6 (6,4) µm; Q = (2,9) 3,2 - 4,1 (4,9); N = 101; Me = 18,7 × 5,2 µm ; Qe = 3,6.

Paraphysis plenty of refractive VBs.

Thank you for your help.

Miguel Á. Ribes
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Hans-Otto Baral, 10-08-2016 21:49
Hans-Otto Baral
Re : Hymenoscyphus calyculus 121015 236
No no, this is an interesting collection, nothing common. It has actually great similarities with H. calyculus, but I would never expect H. calyculus on herbaceous stems.

No idea about this sample, actually. H. calyculus I did not see since a very long time. It might be more frequent in the region of the Alps, but molecular research on it showed that populations with very different rDNA exist - the matter remained unsolved.

Zotto
Miguel Ángel Ribes, 10-08-2016 22:53
Miguel Ãngel Ribes
Re : Hymenoscyphus calyculus 121015 236
Que suerte tengo, si monto un circo me crecen los enanos., 2 de 2. I am sorry, I can't translate it to English. I have a third Hymenoscyphus to sent, perhaps tomorrow, I hope it will be a known species.

Thanks Zotto, another candidate to molecular studies.