19-03-2025 09:29
Michel Hairaud
Bonjour, Récolté sur hépatiques colonisant un
21-03-2025 19:32
Benko Gabor
Dear Ascofrance,I would like to ask for your help.
16-03-2025 11:04
Nicolas VAN VOOREN
Bonjour.Je cherche une copie de l'article suivant:
18-12-2024 17:57
Lothar Krieglsteiner
on dead leaves lying on the ground. The large coni
17-03-2025 19:44
Karen PoulsenHi all I found this very tiny, roundish to cushio
17-03-2025 15:13
Karl GumbingerHello Asco friends, on 16.01.2025 we found in Kre
Pyreno on Pinus
Juuso Äikäs,
23-03-2025 01:00
These little black pyrenos were growing on bark of a fallen Pinus sylvestris branch. Some of the perithecia were more or less round, and some had a little neck.
These appeared to be rather old fruitbodies, but there were spores inside. Some had a septum, which was located either centrally or inequilaterally. The spore surface has some minute ornamentation, and the size of the spores is quite large: 34.5 - 38.5 × 12.9 - 15.6 µm, Q = 2.2 - 2.7; avg = 35.8 × 14.4 µm, Qav = 2.5; n = 5.
Any thoughts about the species/genus/family?
Mathias Hass,
23-03-2025 06:37
Re : Pyreno on Pinus
Hi Juuso
Looks very much like Diplodia sapinea, pycnidia with conidia. This fungus is very common on Pinus cones, needles, twigs and bark. May occasionally also be found on other coniferous trees, at least as D. sapinea s.l.
Kind regards
Mathias
Juuso Äikäs,
23-03-2025 06:57
Re : Pyreno on Pinus
Thank you Mathias. Yes, that does seem to fit. Apparently this species has just recently begun spreading here.