
16-08-2015 10:56

Hola a todos. Pongo unas fotos de una Peziza que

12-08-2015 21:57
Lepista ZacariasDear all,Can you help in identifying this ascomyce

15-08-2015 16:14

Hola, he visto esta Sporormiella sobre excremento

14-08-2015 00:43
We have had a lot of dry weather lately and a log

14-08-2015 10:09
de pequeño tamañoNo se por donde comenzarJoseba

14-08-2015 01:00
Bonjour ! Je viens d'étudier Pulvinula carbonari

14-08-2015 10:13
estas pequeñas setas, a las que no he apreci

22-08-2014 18:01

Hallo to everybody,Does anyone have following docu
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.