Hi,

here I have a small, greyish discomycete that grows on resin on a living trunk of Larix decidua (soc. anamorph of Bisporella resinicola). No real idea where to place it... Ascospores have up to 9 septa and measure up to 41 x 2 µm. Asci are IKI bb and up to 65 µm long. Paraphyses are hyaline, without content, sometimes irregularly branched and/or conspicuously inflated. Excipulum consists of roundish, hyaline, slightly thick-walled cells. The description is based on rehydrated material, photos are not mine.

Best wishes,
Gernot

photos: apos dry - apos rehydrated - ascus - ascus in IKI - asci and paraphyses - paraphyses with inflated parts - ascospore - asci in IKI - ascospore in IKI.

Hans-Otto Baral, 01-12-2014 22:50

Re : Discomycete on resin

Difficult to say something to this fungus. To see the excipulum would perhaps help, a median section that also hits base and margin.

It would be easier to have the living features, for instance, did the paraphyses contain VBs, especially in their inflated part?

The only idea I have is Pseudohelotium, but that is only a guess.

Zotto

Hans-Otto Baral, 04-12-2014 20:48

Re : Discomycete on resin

Hi Gernot

 collapsing is usually not a problem, in KOH the cells generally swell and look nice, especially in CR when hyaline. But I sections are not easy with dead material, especially when the apothecia sit on such crumbled substrate like old resin.

Zotto