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16-08-2022 20:07

Bernard Declercq Bernard Declercq

Good evening,Who could be so kind to supply me fol

07-01-2014 23:04

Michel Hairaud Michel Hairaud

Bonjour à tous, Hi to all. This tiny bright yell

10-08-2022 15:45

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

02-08-2022 17:48

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

16-08-2022 15:50

Thomas Læssøe

https://svampe.databasen.org/observations/10283169

23-07-2022 20:47

Stefan Jakobsson

I made an abundant collection of some Preussia/Spo

15-08-2022 20:36

Marcus Yeo

While in NE Scotland recently I made a couple of c

05-04-2021 10:56

Sven Heinz Sven Heinz

Hello, does anyone have an idea what that could b

17-02-2016 22:49

Ueli Graf Ueli Graf

Hello, I'm looking for  Donadini J.C.  1981 Le g

14-08-2022 18:08

Edvin Johannesen Edvin Johannesen

Found on deciduous wood (probably Betula) in subal

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Yellow asco on Tilia wood
Enrique Rubio, 31-12-2012 17:12
Enrique RubioHi again:

Yesterday I have collected on Tilia wood at 800 m of altitude these small ascomata up to 0.45 mm in diam. with IKI bb asci, croziers (+), some of them with basal globule and + or - lanceolate paraphyses with small yellowish Vb's. Ectal excipulum of an elongate textura prismatica without gelified tissues. 
Hairs in fascicles very difficult to dissociate, + or - yellowish, multiseptate with end cell straight to slightly uncinate, KOH negative.


Maybe a Psilocistella species? because I think it's not an Hamatocanthoscypha as H. uncipila.
What's your opinion?


Many thanks again


Enrique
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Hans-Otto Baral, 31-12-2012 17:56
Hans-Otto Baral
Re : Yellow asco on Tilia wood
Great! It is very similar to Psilachnum rubrotinctum, which I would place in Cistella, but the spores are too short, and the substrate woody.

Seppo Huhtinen once sent me photos of one growing on wood of Populus but mainly on a resupinate polypore. But the spores are a bit larger than yours (5-8 x 2 ?) , though ?similar.

I attach images (hairs are probably in KOH).

Please check NH4OH for a purplish reaction of the yellow VBs.

Zotto

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Enrique Rubio, 31-12-2012 18:19
Enrique Rubio
Re : Yellow asco on Tilia wood
The ascomata turns quickly reddish with the ammonia vapours as Psilachnum rubrotinctum!

Could be better in Psilachnum?
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Hans-Otto Baral, 31-12-2012 18:39
Hans-Otto Baral
Re : Yellow asco on Tilia wood
Fine! I don't know such reaction in Psilachnum (with smooth, straight hairs). But also Cistella does not seem to have it. A matter for molecular people.
Enrique Rubio, 31-12-2012 18:45
Enrique Rubio
Re : Yellow asco on Tilia wood
OK. Thanks again
Michel Hairaud, 31-12-2012 18:52
Michel Hairaud
Re : Yellow asco on Tilia wood
Bravo Enrique pour cette superbe récolte . Il s'agit d'une nouvelle merveille pour Somiedo, je suppose !
Excellent pour terminer cette année 2012. 

J'espère que Somiedo révèlera ses richesses aux nombreux mycologues que nous recevrons dans ce paradis en juin 2013 !

Amitiés
Michel
Enrique Rubio, 31-12-2012 21:25
Enrique Rubio
Re : Yellow asco on Tilia wood

Cher ami:

  J'espère aussi que beaucoup de notres amis viendrons chez nous pour connaitre notre 'micobiodiversité'


A bientot
Enrique