
24-06-2015 20:08
Carmel SammutFound under olive tree - on dead olive leaf (could

23-06-2015 21:32

Hello,this fungus was found in a tropical lowland

23-06-2015 13:52
Hi to everybody On last spring my friend Mikel T

23-06-2015 13:04

Hello! I collected this Trichopeziza(?) on dead s

23-06-2015 17:02
Found in Abies cephalonica, 23-06-15. With Melzer,

23-06-2015 09:04
Marja PennanenHi,here's another mystery. These are about 0,2 mm

23-06-2015 08:50
Marja PennanenHi,the summer finally started here.These change co

22-06-2015 17:16
This Scutellinia was found growing on a Picea cone

22-06-2015 14:06
Thorben HülsewigHi there, before 3 weeks ago i found on a tribe (
Rutstroemia from a Bosnian mountain
Nihad Omerovic,
28-09-2023 22:11
Looking for opinions on this Rutstroemia; I considered R. alnobetulae - spore size, shape and content match, but there's no IKI blue reaction with paraphyses.
Date: 10. 09. 2023.
Habitat/substratum: peat bog fragment around a mountain stream, 1800 m elevation, with Alnus, Salix, Pinus mugo, on a dead twig, possibly from Alnus glutinosa.
Spore size: Me = 26.5 × 6.2 µm ; Qe = 4.3 (some over 28 µm)
Asci: around 170 µm, croziers +
Could not make proper section - ascoma was gelatinous and then kind of squishy.
Last picture is twig section.
Hans-Otto Baral,
29-09-2023 09:50

Re : Rutstroemia from a Bosnian mountain
Alnus is the only possible genus among the three trees you mentioned. You can verify it by a radial section by looking for the ladder-like perforations.
Spores etc. fit that species. I am not sure how constant this reaction of the VBs is. The VBs look correct. Also I am not sure if this reaction works on herbarium material.
Hans-Otto Baral,
30-09-2023 20:33

Re : Rutstroemia from a Bosnian mountain
Sorry I failed to say that you must hit the vessels. The rows of larger cells in your cross section show such ladders in radial section. Vessels are often very abundant but here they are more scattered. Bad luck!
Nihad Omerovic,
01-10-2023 19:08
Hans-Otto Baral,
01-10-2023 20:36

Re : Rutstroemia from a Bosnian mountain
Yes it is, very good. So it is clearly a Betulaceae and only Betula comes in consideration besides Alnus.