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05-12-2019 09:06

Valencia Lopez Francisco Javier

Hola amigosEstoy buscando este trabajo de la Errot

05-12-2019 19:35

Ibai Olariaga Ibarguren

Dear colleagues, I was wondering if anyone could

19-11-2019 18:05

Lothar Krieglsteiner Lothar Krieglsteiner

... under a twig of deciduous tree (likely Quercus

27-11-2019 16:54

Rasmus Riis-Hansen Rasmus Riis-Hansen

Hi,I hope you can help med with this disc found a

29-06-2011 22:52

Luc Bailly Luc Bailly

Encore trois ascos de la réserve naturelle domani

04-12-2019 13:01

Mirek Gryc

Hello everyoneI inform you in advance that this is

04-12-2019 14:53

Lothar Krieglsteiner Lothar Krieglsteiner

Hello together, does somebody have: DONADINI J.-

03-12-2019 10:36

Thomas Læssøe

Pale, long-stemmed, recalling H. seminis-alni; ap.

24-11-2019 19:03

Mirek Gryc

They grew on plant debris soaked in faeces togethe

29-11-2019 12:11

Castillo Joseba Castillo Joseba

Me mandan esta muestra de Galicia,  recolectada e

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Tapesia ?
Ethan Crenson, 19-11-2019 05:47
Hello all,

This was collected yesterday in New York City on bare hardwood.  Apothecia are tiny reaching 1mm, but in most cases they are smaller.  The hyenium is off-white, darkening to dark gray in age. They are waxy and resemble Mollisia, but have a fine white subiculum—so Tapesia then, correct?  Only I recall seeing on this forum a comment by Zotto that there is no Tapesia, it's all Mollisia now. However, considering the collection posted here, if this is (was) Tapesia, what do we have? 

Asci are IKI+, 52-60 x 5-6µm. Spores lack oil drops, and measure 7-9 (11) x 2-3µm.  The subiculum appears hyaline at the outer edges, both in reflected and projected light, however the hyphae beneath the apothecia are brown and measure 3-5µm thick.  Paraphyses about 3µm at the tips and do not appear to change color in KOH. 

Thanks in advance.

Ethan
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Hans-Otto Baral, 19-11-2019 08:02
Hans-Otto Baral
Re : Tapesia ?
Hi Ethan

Are the apothecia more or less dry? They look a bit so. Tapesia is no more accepted, it is Mollisia. Your sample will be difficult to separate from M. cinerea, despite the subiculum which actually most Mollisia spp. have. Your data are very detailed, but the genus is so complex that DNA (ITS) is necessary to say something clear.

Zotto
Ethan Crenson, 19-11-2019 16:45
Re : Tapesia ?
The apothecia are more or less dry.  I'm curious to know what accounts for the presence of the subiculum. An environmental factor, or something else? And I am getting the sense that the reason for the deprecation of the genus Tapesia is an accumulation of mostly unpublished evidence and opinions. Is that wrong?  Is there anything in print that i could read that could provide some clarity?  I will attempt to have this collection sequenced.  If my data are useful and the sequence is successful then perhaps it could help.  Who knows?

Thank you Zotto!

Ethan
Hans-Otto Baral, 19-11-2019 16:51
Hans-Otto Baral
Re : Tapesia ?
No no, this is published. I wrote it in 1985 p. 35 (Bausteine....) and in 1994, Bellemere in 1977.

My 1994 file is attached.

Great, if you get the ITS rDNA then we can probably say what it is.

Zotto
Ethan Crenson, 19-11-2019 16:56
Re : Tapesia ?
Thank you very much!