13-06-2025 09:41
Josep Torres
Hello.A cerebriform ascomycete sprouting scattered
13-06-2025 16:34
Andgelo Mombert
Bonjour,Un petit discomycète qui me résiste. Il
21-07-2025 19:22
Ethan CrensonHello all, Here is an Orbilia found by a friend
14-07-2025 11:20
Michel Hairaud
Bonjour, Voici une espèce de (?) Hyaloscyphace
18-07-2025 23:03
Josep Torres
Hello.Fruitings between 51 and 130 microns in tota
16-07-2025 17:34
Bernard Declercq
Hello,I have trouble distinguishing above mention
16-01-2023 21:31
Riet van Oosten
Hello, Nearby the find of Calycina claroflava on
I found this Ascobolus on horse dung yesterday. At first I thought of A. stercorarius, but the spores are smaller. Following the key of Yi-Jian Yao I end up at nr 20: there the choice is between A. michaudii or A. perplexans.
Sporesize: (17,8) 19-23 x 10,4-11,3. If I'm correct, I see 7–12 longitudinal fine crevices. I also see a very very light blue reaction in Meltzer on young asci (I had to really search for it).
Am I right in thinking it is A. perplexans?
Thanks already!
Maria
A.michaudii with smaller spores and less streaking on the surface.
On the other hand, it is more difficult to separate A.perplexans from furfuraceus. You can check the average size of the spores (in my opinion smaller in perplexans), and the structure of the exipulum, but the weak reaction of the wall of the asci makes it close to perplexans.
Michel.
Thank you for your reaction!
The spores are indeed smaller than A. furfuraceus, so I ruled that one out. Deciding between A. michaudii or A. perplexans was/is more complicated.. Between those two the sporemeisures are not that different: my smallest was 17,8, but all the rest was from 19 to 23.
I am absolutely not familiar with Ascobolus, so I find it also a bit difficult to say how many "lines" I see on the spores :).
On the other hand: I tried several specimens, but in none of them I saw a clear blue reaction in Meltzer...
Do you think that, because of that very weak reaction in Meltzer, I can assume it's A. perplexans or should it stay unsure?
Maria
The weak reaction is one of the main criteria to separate these two species and if as you say the reaction is very weak (on young asci), A.perplexans corresponds.
Michel.
Maria