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22-12-2024 21:42

Bometon Javier Bometon Javier

Habitat en el suelo, con presencia de Calluna mult

22-12-2024 10:19

Simon Gurtner Simon Gurtner

Hello,can anyone help me identify this small ascom

21-12-2024 12:45

Marc Detollenaere Marc Detollenaere

Dear Forum,On naked wood of Fagus, I found some ha

22-12-2024 10:53

Bernard CLESSE Bernard CLESSE

Pourriez-vous me confirmer ma détermination de ce

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Louis DENY

Bonsoir forumTrouvé à Belfort, 400 m altitude, s

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Castillo Joseba Castillo Joseba

me mandan elmaterial seco de Galicia,  recolectad

21-12-2024 11:14

Michel RIMBAUD

Hello,Does somebody could send me a key for Olla/U

17-02-2013 08:38

Alain GARDIENNET Alain GARDIENNET

Bonjour, J'ai trouvé ces acervules sur feuille d

21-12-2024 09:08

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia,  recolecta

17-12-2024 12:33

Lothar Krieglsteiner Lothar Krieglsteiner

this fluffy anamorph was repeatedly found on decid

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Ostropales indet. 2
Hans-Otto Baral, 03-10-2009 18:22
Hans-Otto BaralHere is the second one. This has an inamyloid hymenium (like Ostropa and Robergea), but the spore sheath is very distinctly hemiamyloid!

N of Digne, Quercus pubescens branch 10 mm thick. Sp. ca. 300 µm long, *2.5-3.2 µm wide, cells 8-8 µm long, lipid content 1.5-2.5. Asci and whole hymenium inamyloid, but spores in dead state (sometimes also living?) IKI 2rr, after shortly boiling IKI bright blue.

Zotto
  • message #9144
Hans-Otto Baral, 03-10-2009 18:25
Hans-Otto Baral
Re:Ostropales indet. 2
The ascomata are almost perithecioid here.
  • message #9145
Gernot Friebes, 04-10-2009 14:48
Re:Ostropales indet. 2
Hi Zotto,

could it be Schizoxylon albo-atrum? At least this is my outcome with the key of Schizoxylon by Martha Sherwood.

Best wishes,

Gernot
Hans-Otto Baral, 04-10-2009 23:15
Hans-Otto Baral
Re:Ostropales indet. 2
Hi Gernot

thanks, that's a good idea! Sherwoods illustration on p. 112 fits quite well. The ascospore cells she gave as 4-5 x 2 µm, while I measured 5-8 x 2.5-3.2 µm in the living state (sorry for my error above). It is a pity that we do not know whether the spores are also hemiamyloid in Sherwood's material, especially Rehm's type. Sherwood says for the paraphyses J- or faintly J+ blue, but we must know that she used Melzer, and a hemiamyloid hymenium like in my Ostropales indet. 1 would be in Melzer just like that, J- or faintly blue. In one of her material of alboatrum (from Oregon) she reported a strongly amyloid epithecium. And I do not understand why she says "apparently common" but cites only 7 collections.

Zotto