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27-05-2010 10:41

White oddity
Marja Pennanen

I found these on a juncus-like grass. They are abo

26-05-2010 17:14

Peziza sp. à spores particulières
Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour. Voici une pézize qui me pose problème,

26-05-2010 00:18

Polysporous Podospora, P. granulostriata?
M. M. Gotink

On rabbit dung this time, which I also keep in a m

25-05-2010 15:08

sur Pinus strobus
Jean Pierre Dechaume Jean Pierre Dechaume

Quelque chose qui ressemble à Terrya pini, de 1,5

24-05-2010 23:34

Podospora dakotensis?
M. M. Gotink

I found this one today on hare dung which I keep i

24-05-2010 10:14

In det Lachnum
Marja Pennanen

Hello, once again I have great difficulties to ge

23-05-2010 21:30

Fusarium
Hans-Otto Baral Hans-Otto Baral

In Arcon, le Gué de la Chaux, on attached Pinus s

23-05-2010 21:20

Green operculate copro
Martin Bemmann Martin Bemmann

Dear all, I am currently in the northern mounta

23-05-2010 18:37

Colmenilla en la Ibérica
Javier Ormad

Connues sont les difficultés à déterminer les m

20-05-2010 21:44

Aide pour un Ciboria
Gilbert MOYNE

Voici un petit Ciboria (je pense) récolté ce jou

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White oddity
Marja Pennanen, 27-05-2010 10:41
I found these on a juncus-like grass. They are about 0,5-0,7 mm high and 0,2-0,4 mm wide. The base of stipe is brown.
  • message #11628
Marja Pennanen, 27-05-2010 10:49
Re:White oddity
This showed some facilities new to me in microscope.
I've never seen such paraphyses or hairs- meaning so big droplets.
The spores are 6-12x1-2, asci 33-40x4-5.
Lanceolate paraphyses are 4-5 micrometers wide and exceed the asci about 10-15 micrometers and have lots of droplets.
Hairs are 35-40x3-5 and they have droplets, too. Except at the stipe, where they are smaller, but can branch.
Strange, actually I have no idea even of the genus...

Marja
  • message #11629
Enrique Rubio, 27-05-2010 10:51
Enrique Rubio
Re:White oddity
Its a Lachnum (Dasyscyphus) species, probably L. pudicellum
Enrique
Hans-Otto Baral, 27-05-2010 10:56
Hans-Otto Baral
Re:White oddity
Yes, I agree. The hairs are surely warted. The droplets inside and in the paraphyses are VBs (vacuolar bodies), they are responsible for the colour change to red-brown in the dead state. Such a fungus may look deep brown when dry. If you add KOH these droplets disappear.

Zotto
Marja Pennanen, 27-05-2010 11:17
Re:White oddity
Hello,

thanks. One of the synonyms seems to be L. tenuissimum and I've allready found that.
With another microscope things seems different ;)

Marja