
25-04-2025 22:48

Hello,I hope everything is going well. I couple mo

24-04-2025 21:35
Thorben HülsewigHi there,last week i could found this asco on an S

25-04-2025 17:24
Stefan BlaserHi everybody, This collection was collected by J

25-04-2025 09:33
Ascomata shaped like deformed black grains, measur

24-04-2025 21:53

... 15.7.24 in the Alps. There were many asci with

23-04-2025 20:16

Good afternoon Looking for Octospores / Lamprospo

24-04-2025 15:03
Henri KoskinenHello, I collected this Lasiobolus 22.04. near Hel

23-04-2025 19:58

I found this interesting Orbilia sp. one year ago

22-04-2025 10:37
François BartholomeeusenAlso found on April 18, 2025 on an old seed-pod of

Can you tell me whether there are any environmental preferences of species Chlorociboria aeruginella, Ch. aeruginascens and Ch. aeruginosa? I would like to clarify for myself what same species from mentioned above are able to colonize wood of Fagus and cause its greening. I often find a timber devoid of fruiting bodies. Is it possible in this case to talk about any particular species name?
What other criteria besides the size of ascospores are important for these species delimitation?
At one of my samples I found ascospores the following sizes:
(12.3) 13,1-14,5 (15.3) x (2,0) 2,7-3,4. Could this be Chlorociboria aeruginella?
Grateful before,
Alex

C. aeruginella is a species of herbaceous stems and leaves. On wood there is only aeruginascens and aeruginosa, which are indistinguishable from the green stain. But my data on substrate preferences say:
aeruginosa: Betula, Acer, ?Populus
aeruginascens: Quercus, Salix, Alnus, Carpinus, Fraxinus, Fagus, Laurus.
But Dixon gives also Betula for aeruginascens, and even conifers, and for aeruginosa? a very similar host spectrum.
Your spores perfectly fit to the more rare aeruginosa. Both species have short flexuous haurs but those of aeruginosa are warted, those of aeruginascens smooth.
Zotto