04-07-2013 16:01
Stefan BlaserHello everybody My last riddle was solved so fast
08-07-2013 18:35
Nina FilippovaGood evening.The litter of cottongrass (Er. vagina
07-07-2013 23:34
Alessio Pierotti
For the revisions of the exsiccata of fungi and li
07-07-2013 06:48
Nina FilippovaBoth these species are rare, but several times col
05-07-2013 07:17
Nina Filippova(15.06.2013)The litter of Marsh clover (Menyanthes
04-07-2013 23:29
Zuzana Sochorová (Egertová)
Good evening,in spring I found these small ascomyc
My last riddle was solved so fast I have to ask another one :)
Substrate: On dead twig of cf Sorbus on the bark
Macro: Bark with small, blackish bumps of 0.3 mm diam. Aside from this blackened surface, no clear delimitation of perithecia was visible. A very small pore was just visible in some of the bumps.
Micro: Asci cylindric, with short stalk, 85-95 x 16-18 µm. Spores hyaline, two-celled, usually with one cell slightly broader/bigger, constricted at septum, usually 1 or 2 large oildrops per cell, 18-19.5 x 6-7 µm . Spore surrounded by a slime sheath. (I have also observed some spores that are brownish and "warted": mature or just degrading?). Covering layer is formed of plant tissue which is intermingled with dark brown hyphae (see photos).
Thank you for any comments
Stefan
Cheers, Walter
Vielen Dank für den Hinweis. Nach allem, was ich bisher im Netz sichten konnte, dürfte diese Identifikation in makro- und mikroskopischer Sicht ziemlich sicher sein.
Gruss
Stefan
This fungi is often recorded by lichenologist on bark of different trees (Labbbaumen).
But there are several species and it's not always easy to give the right name.
Have you seen a thallus ? And what is the width of paraphyses (s.l.) ?
The last picture is in KOH ?
Alain
The last pic is in KOH, yes. I did not observe any algae in cuts, so I think its non-lichenized. I can not give you a measure of paraphyses at the moment, as I'm not at home (Will be next week). What would be alternatives to analepta then?
Merci bien
Stefan