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21-04-2013 00:14

Yannick Mourgues Yannick Mourgues

Sur extrémités de feuilles de Cytisus sp. mort e

26-03-2013 12:54

hannie wijers

Hello,I hope anyone can help me with my "problem"Â

21-04-2013 01:06

Yannick Mourgues Yannick Mourgues

Branche morte au sol avec Arachnopeziza aurelia, c

15-04-2013 13:56

Alain BRISSARD

Bonjour à tousLors d'une sortie hier sur le Causs

20-04-2013 20:20

hannie wijers

This frb was hairy, also on Rubus. I think the bro

20-04-2013 18:01

hannie wijers

Today I had this little black spot under the mic.

18-04-2013 02:19

Roland Labbé

Bonjour !Voici un autre disco dont nous ne savonsÂ

18-04-2013 19:28

Enrique Rubio Enrique Rubio

Hi to all On medium size (40-70 mm in diam.) fell

13-03-2013 10:36

Francisco Javier Mateos Francisco Javier Mateos

Salut bonjour, J'ai trouvé cette espèce à Salam

20-04-2013 09:14

Hans-Otto Baral Hans-Otto Baral

Good morning I am searching for a locality in N-A

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White apothecia on Pseudotsuga
Enrique Rubio, 19-02-2021 20:07
Enrique RubioThese small, white, gregarious, broadly sessile apothecia, 0.2-0.3 mm in diameter, with glabrous margins, grew among algae and liverworts on corticated wood of Pseudotsuga menziesii near the sea.
The asci are ventricose, slightly dextrinoid in IKI, with croziers and a broad, very bluish apical apparatus in IKI, and contain eight spores already septate even inside the asci. The paraphyses are moniliform near the apex and the marginal hairs are similar and closely agglutinated.
It doesn't look like a Hyaloscypha, but I couldn't say to which genus it might belong, perhaps it could be an ascolichen?

Many thanks again

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  • message #67542
  • message #67542
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Hans-Otto Baral, 19-02-2021 21:02
Hans-Otto Baral
Re : White apothecia on Pseudotsuga
Yes, it is an ascolichen. Dimerella pineti or so, now Coenogonium.

The entire asci are reactive, I see a faint reddish but after KOH this should react blue. The spore surface probably turns lilac in CRB.

Typical are the paraphyses with dense septation above.
Enrique Rubio, 19-02-2021 21:05
Enrique Rubio
Re : White apothecia on Pseudotsuga
Thanks a lot, Zotto.
It seems to match well with what you say.