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03-06-2026 19:45

Miguel Ãngel Ribes Miguel Ángel Ribes

Good afternoonI'm completely baffled by this suppo

03-06-2026 21:37

Tony Cumberlidge

This is my second post so just starting to get use

03-06-2026 14:39

Thomas Flammer

Apothecia yellow, glassy-transparent, 80 - 120 ymS

02-05-2016 17:12

Gilles Corriol Gilles Corriol

Bonjour à tous,Suivant le conseil de Nicolas VV,

12-02-2013 01:36

Renée Lebeuf

Bonjour, J'aurais de nouveau besoin de votre aide

16-03-2014 13:39

Enrique Rubio Enrique Rubio

HI to all I'm looking for B. Hein's article on Wi

02-06-2026 14:33

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for a PDF copy of the followin

03-06-2026 08:21

Yanick BOULANGER

BonjourRécolté le 17/05/2026Sur un chemin, terre

18-10-2022 00:12

Valencia Lopez Francisco Javier

Hola amigos/asRecientemente encontré esta colecci

02-06-2026 17:58

Louis DENY

Bonjour forum, Sur feuille de Populus tremula, en

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Pulvinula 051225 273
Miguel Ángel Ribes, 03-06-2026 19:45
Miguel Ãngel RibesGood afternoon

I'm completely baffled by this supposed *Pulvinula* due to its discoid to pulvinate apothecia, the lack of guttulation of the ascospores, and the thickened paraphyses at the apex.

It was growing on soil with some mosses, in calcareous soil that may have been burned some time ago, but I can't confirm the latter.

Apothecia 1-1.5 cm, discoid to pulvinate, not cup-shaped, without a differentiated margin, bright orange in color.


Asci cylindrical almost to the base, with croziers, octosporic (although many of them with 4 aborted spores), inamyloid, (197) 213 - 254 (257) × (21.6) 24.3 - 29.5 (30.5) µm; Q = (7.4) 7.8 - 9.8 (10); Me = 233.1 × 26.7 µm; Qe = 8.8.


Ascospores spherical, hyaline, without ornamentation nor apparent guttules, (14.1) 15–17.1 (17.4) × (13.5) 14.2–16.4 (16.9) µm; Q = 1–1.05 (1.1); N = 51; Me = 15.9 × 15.5 µm; Qe = 1.


Paraphyses cylindrical, multiseptate, straight, apparently not bifurcated, with the apex thickened to (7.4) 8.8–11.3 (11.8) µm; Me = 10 µm.


Ectal excipulum with textura angularis, medullary excipulum with textura intricata.


Using these characteristics and Moyne's keys, I arrive at P. cinnabarina (but this one would have longer and narrower asci), P. convexella (also with narrower asci), P. miltina (perhaps the best fit), P. carbonaria (also a good fit), and P. globifera (with smaller spores).


Thank you for your help.

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Enrique Rubio, 03-06-2026 21:24
Enrique Rubio
Re : Pulvinula 051225 273
Hola Miguel Ángel.

A beautiful species that appears to be quite closely related to Pulvinula miltina. Perhaps the paraphyses are slightly wider than in Rifai's description. But as this is a species that seems to be found in the southern hemisphere, I think you should try to sequence it, as there are records in GenBank.
Best wishes.
Miguel Ángel Ribes, 03-06-2026 22:16
Miguel Ãngel Ribes
Re : Pulvinula 051225 273
Thank you very much, Enrique.

I'll probably have to wait a while, until I return to Ibiza, to find it again and have more material to sequence. The collection only has the three apothecia in the photo, and I used one of them for the micrograph. Even if I found the other two apothecia in the soil sample I have, I wouldn't have enough material.

Best regards