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27-10-2013 21:12

Marcus Yeo

I recently found this Rutstroemia growing on dead

27-10-2013 09:35

René Dougoud

Bonjour cers Tous,Je recherche cette publication,

27-10-2013 09:34

Peter Thompson

Hello Everyone,I recently found a Coprotus species

28-10-2013 09:26

Yannick Mourgues Yannick Mourgues

Bonjour à tous.Qui saurait où je peux trouver le

17-10-2013 14:09

Gilbert MOYNE

Bonjour,Un petit asco qui me pose problème :Habit

24-10-2013 22:45

Ralph Vandiest Ralph Vandiest

Hello,I found these peziza at the edges of a more

22-10-2013 21:51

Jean-Luc Ranger

Bonjour à tous, Voici une Otidea qui semble corre

23-10-2013 18:19

FRANCIS FOUCHIER

Dear all, does anyone have a digital copy of the

20-10-2013 12:53

Rubén Negrín

Hola a todos. Sigo el foro pero es la primera vez

22-10-2013 17:08

Enrique Rubio Enrique Rubio

Can you help me with this article? Schumacher, T.;

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Rutstroemia on Acer campestre leaves
Marcus Yeo, 27-10-2013 21:12
I recently found this Rutstroemia growing on dead leaves (mainly on the petioles) of Acer campestre.

Apothecia are up to 3 mm diameter with a short stalk; the hymenium is pale brown with a darker margin.


Excipulum is a textura oblita in part, with thin-walled cells in part.


Asci are 85-100 x 10 µm, with tips staining blue in IKI. Spores are single-celled, 12-14 x 4.5-5 µm, with 2 large oil bodies and many minute oil bodies.


Paraphyses are 3-4 µm wide, with oil-filled contents in the upper part.


The colour of the apothecium and other characters would appear to rule out Rutstroemia (Lanzia) luteovirescens, which is characteristic of Acer. Microscopic characters don't seem to fit well with other species found on decaying tree leaves, so I'm struggling to make an identification.


I would be grateful for any help.

Marcus

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Hans-Otto Baral, 27-10-2013 22:08
Hans-Otto Baral
Re : Rutstroemia on Acer campestre leaves
Hi Marcus

this is Rutstroemia "kalevi".  You find it in folder Rutstroemia.

The name might be a creation by the late Terry Palmer, but I do not remember the etymology.

An undescribed species, though perhaps hidden under some old name, who knows.

Apparently very rare!

Zotto
Marcus Yeo, 28-10-2013 23:02
Re : Rutstroemia on Acer campestre leaves
Zotto

Thank you. That explains why I couldn't identify it from the standard floras and keys!

Marcus