03-06-2026 19:45
Miguel Ángel Ribes
Good afternoonI'm completely baffled by this suppo
03-06-2026 14:39
Thomas FlammerApothecia yellow, glassy-transparent, 80 - 120 ymS
16-03-2014 13:39
HI to all I'm looking for B. Hein's article on Wi
02-06-2026 14:33
Nicolas VAN VOOREN
Hello.I'm searching for a PDF copy of the followin
18-10-2022 00:12
Valencia Lopez Francisco JavierHola amigos/asRecientemente encontré esta colecci
02-06-2026 17:58
Louis DENYBonjour forum, Sur feuille de Populus tremula, en
Good afternoonI'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.
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.
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








