Accès membres

Mot de passe perdu? S'inscrire

20-01-2022 13:25

Castillo Joseba Castillo Joseba

Recolec tado en ramas de sauce semienterradasMe ma

16-01-2022 00:16

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos.Subo unas fotos de un Ascobolus que h

13-01-2022 12:46

Malcolm  Greaves Malcolm Greaves

I have followed the discussions on the Geoglossum

19-01-2022 20:31

William de Jong

Hi,I found Hydropisphaera erubescens, I think, on

19-01-2022 10:25

Enrique Rubio Enrique Rubio

Hi ForumThe ascomata of this fungus grew on cortic

19-01-2022 02:24

Zuidland Peter

Hello all,I have found this erumpant only on Olear

19-01-2022 02:21

Zuidland Peter

Hello all,I have found this erumpant only on Olear

27-01-2019 00:41

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas fotos de un asco que hemo

16-01-2022 15:10

William de Jong

Hi everyone,Found on a cone of Picea abies by Fran

16-01-2022 21:25

Robin Isaksson Robin Isaksson

Spores 10-15 x 1,8-2,3um Found on apel twig today

« < 1 2 3 4 5 > »
Rutstroemia sp.
Perz Piotr, 23-02-2006 12:14
Salve!

I have found this Rutstroemia on [unidetified] petiole: http://wwkk.mikologia.pl/spec/20051015_001_PERZ/20051015_001_PERZ.php

What is strange? Strange is H2O+IKI reaction on..... I do not know where :) It seems to be LB's in paraphyses reaction, or interhymenial gel (A.Gminder) ?? Something is here amyloid!
Rutstroemia sydowiana HAS NOT this reaction (H2O+IKI), may be Rutstroemia petiolorum, but i do not have this spec. in my herbarium and i can not test this reaction.

What do you think - is this a contaminant in hymenium or this taxon does have amyloid LB's in paraphyses OR interhymenial gel ?

Has anyone R.petiolorum and can make test for me? Or may be do you know this spec.?

Best,
Pimpek
Hans-Otto Baral, 23-03-2006 18:26
Hans-Otto Baral
Re:Rutstroemia sp.
The Rutstroemia is very interesting, I think it is conspecific with R. "kalevi" on the DVD. This name is unpublished, it was intended to be published by J.T. Palmer and myself long ago. The substrate looks for me as an Acer petiole, and that´s also the substrate of the two earlier finds.

I found the ectal excipulum to be heavily gelatinized! No t. prismatica but strong oblita, see below. But it´s interesting: the find made by Lothar Krieglsteiner I saw fresh and I saw only scarcely any gel in the (living) excipulum, whereas in the find from Estonia the excipulum is heavily gelatinized. You write you have only one fruitbody, but I see two on your drawing. Do you still have one? Please have another look at the excipulum.

The species is surely close to R. coracina, but that is on Quercus leaves in the mediterranean area and has broader spores and brown vacuoles in the living paraphyses. Typical for both is the brown crenulate margin.

What I´m surprized from your drawing are the multiguttulate paraphyses. Such guttulation is very very typical of R. luteovirescens (which also grows on stromatized Acer leaves). But that species has yelow apothecia and really a textura prismatica without gel! R. kalevi has Mollisia-like vacuoles in the paraphyses. I presume that the guttules you saw in the dead material are secondary, maybe induced by the iodine. By the way I saw only the apical rings to react blue in IKI, and I am sure that you saw the blue rings of the old emptied and collapsed asci among the paraphyses and were misled to believe that the latter were amyloid.

  • message #681