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29-04-2015 15:42

Leandro Sánchez Leandro Sánchez

Sur Abies, diamètre max 1mmSpores  16,20-18,60 /

28-04-2015 21:58

Jenny Seawright Jenny Seawright

Hello all, Found on Phragmites australis (?) at th

29-04-2015 11:36

Jean-Louis JALLA Jean-Louis JALLA

Bonjour à tous.Je sollicite votre aide pour ce pe

28-04-2015 20:35

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,please, are the structures I observed in med

28-04-2015 00:14

Andrew N. Miller Andrew N. Miller

Not a Chaetosphaeria.  Not a Hilberina.  Any ide

24-04-2015 14:49

Dragiša Savic

I found it on Galium mollugo, about 1mm tall, does

27-04-2015 21:06

Steve Clements

Hi,I used Fungi of Switzerland and W.G. Dennis (A

25-04-2015 12:19

Castillo Joseba Castillo Joseba

En madera sin determinar A ver si hay alguna suge

27-04-2015 14:21

Leandro Sánchez Leandro Sánchez

Sur Fagus.Asques 67-77 / 5-7 , BB, croziers +KOH 3

27-04-2015 15:43

Nina Filippova

Hello dear Forum.This very early species was found

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Ramsbottomia crec'hqueraultii 280815 287
Miguel Ángel Ribes, 06-08-2016 20:49
Miguel Ãngel RibesHi friends

I have this Ramsbottomia with rounded spores and mixed characters between R. crec'hqueraultii and R. macracantha.

Spores (1000x, H2O, live, without ornamentation): (19,2) 20,3 - 23,4 (23,6) × (19) 20,2 - 22,7 (22,9) µm; Q = 1 ; N = 37; Me = 21,8 × 21,4 µm; Qe = 1.

Ornamentation length: (2,2) 2,6 - 3,9 (4,2) µm; N = 45; Me = 3,3 µm.

I think it is nearest R. crec'hqueraultii than macracantha because Me spores are 21,8 x 21,4 (only a little bigger than 20 µm) and ornamentation is Me = 3,3 µm, but all papers I have read have spore measures for crec'hqueraltii < 20 µm and spiner never > 3,5 µm. And in this collection some spines have a very broad base.

Perhaps my collection is a "joung" R. macracantha?

Thank you in advance.
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Nicolas VAN VOOREN, 07-08-2016 09:53
Nicolas VAN VOOREN
Re : Ramsbottomia crec'hqueraultii 280815 287
Hi Miguel.
You lost your Cotton Blue  ;-)
It would be interesting to know more about the other characters, especially the "hairs", and the habitat.
Miguel Ángel Ribes, 07-08-2016 17:50
Miguel Ãngel Ribes
Re : Ramsbottomia crec'hqueraultii 280815 287
Jejeje, don't worry Nico, next time, despite this impressive ornamentation, I will use CB, CRB or another blue.

This Ramsbottomia was neighbor of Boudiera tracheia, at alpine place, in a very, very humid slope of a small stream, between mosses, with Juncus, Aconitum and another small herbs.

An this are the pictures.
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Nicolas VAN VOOREN, 09-08-2016 19:07
Nicolas VAN VOOREN
Re : Ramsbottomia crec'hqueraultii 280815 287
Hi.
In alpine zone, the most common species is R. asperior, but the spores of this collection seem to be too large (and not enough subglobose) to fit the latter.
R. lamprosporoidea is another hypothesis, but the "hairs" should be more coloured and longer (I think you remember our discussion about this taxon and some Pyrenean collections).

In all cases keep this collection, a DNA sequence could be useful to clarify the taxonomy of each taxon...
Miguel Ángel Ribes, 09-08-2016 19:40
Miguel Ãngel Ribes
Re : Ramsbottomia crec'hqueraultii 280815 287
Hi Nico

We have a collection of R. lamprosporoidea published in "Contribución al conocimiento de la micobiotal de Parque Natual de la Sierra Norte de Guadalajara. Catálogo y especies más interesantes I. Bol. Soc. Micol. Madrid 38: 163-181. 2014" (link here: https://www.dropbox.com/s/kilf85z3nt3683z/Contribucion%20conocimiento%20micobiota%20del%20PN%20Sierra%20Norte%20de%20Guadalajara%20-%20Campos%202014.pdf?dl=0):

* with subglobose spores, not rounded, (16,1-)16,9-18,9(-19,3) x (13,8-)14,8-17(-17,4) mµ Q = (1-)1,05-1,18(-1,2); N = 41; Me = 17,9 x 16 µm ; Qe = 1,1.

* with darker hairs of (72,3-)103,5-134,9(-162,3) x (11,7-)13,3-22(-24,3) µm; N = 34; Me = 118 x 17,5 µm

The length hairs is similar in both collection, but not the spore shape.

We could try to sequenced it.

Thank you.