23-09-2025 13:31
Thomas Læssøehttps://svampe.databasen.org/observations/10534623
15-10-2025 16:39
Edvin Johannesen
These tiny (0.2-0.6 mm), white, pulvinate apotheci
03-10-2025 13:44
Riet van Oosten
Hello, Found by Laurens van der Linde on Populus
13-10-2025 19:05
Louis DENYBonjour forumSur tronc décortiqué de feuillu x,
11-10-2025 20:27
Marcel Heyligen
Found on a barked branch, 14 mm in diameter, of Ro
09-10-2025 22:14
S. RebeccaWe just had the Bavarian Mycology Conference in Au
10-10-2025 00:49
Ethan CrensonHello all, This was found last weekend on a hardw
Calycina citrina vs. confluens, ecology
Viktorie Halasu,
15-11-2021 23:56
Hello forum,I would like to ask, what is your experience with the ecology of Calycina citrina vs. C. confluens? Do they have any biotop / substrate / wood size preference? I have here a small riparian forest I visit frequently (ash, oak, elm, poplar...) and for several years I keep finding only C. confluens there. So I wonder why not also C. citrina, which is supposed to be at least just as common. Does it prefer bulky beech wood?
Thank you.
Viktorie
Hans-Otto Baral,
16-11-2021 10:50
Re : Calycina citrina vs. confluens, ecology
I have as substrate often Corylus, also often Alnus, rarely Salix, Fagus and Fraxinus. C. citrina is very often on Fagus, also often on Carpinus, but Alnus, Ulmus, Quercus and even conifers occur. Whether riparian forests are preferred by confluens I cannot easily say. But I must admit that the separation of the two species is difficult. Genetically they are different, according to the few available sequences of confluens.
Viktorie Halasu,
16-11-2021 11:04
Re : Calycina citrina vs. confluens, ecology
Ok, there was a nice rich population on Ulmus branch, I'll do a better micro and separate a piece for sequencing. Free spores 0-1septate, (12,7)14.3-16.7(17.5) x (4)4.5-5(5.5) um, asci H+ IKI+b.
Another older collection on Tilia had smaller spores, (10.8)11.9-14.8(15.2) x (3.7) 4.2-4.7(5.1), 0-1septate (free spores). I'm not sure whether to call it confluens too, at that time I forgot to check the septation inside living asci. If I remember correctly, you wrote in another thread something about C. citrina never having spores more than 1s, but confluens 1-3s - did you mean inside asci or free (possibly overmature) spores?
Another older collection on Tilia had smaller spores, (10.8)11.9-14.8(15.2) x (3.7) 4.2-4.7(5.1), 0-1septate (free spores). I'm not sure whether to call it confluens too, at that time I forgot to check the septation inside living asci. If I remember correctly, you wrote in another thread something about C. citrina never having spores more than 1s, but confluens 1-3s - did you mean inside asci or free (possibly overmature) spores?
Hans-Otto Baral,
16-11-2021 11:33
Re : Calycina citrina vs. confluens, ecology
Septate spores can be both inside and outside the asci, but NEVER inside living asci in this species complex. Overmature spores could help: 1-septate = citrina, 1-3-septate = confluens.
The genetic situation is unclear (March 2021). There are two distinct clades, but which is which?
For Guy's collection and Florian Prell's FP100 docus are available to me. Spore size is similar. Guy uploaded his sequence, it got the number KY462815.
