05-02-2026 15:07
Vasileios Kaounas
Found on a fallen needle of Pinus halepensis, diam
05-02-2026 06:43
Stefan BlaserHello everybody, Any help on this one would be mu
03-02-2026 20:44
Zetti MarioWhen I first saw this white mould on an Agaricus s
18-08-2025 15:07
Lothar Krieglsteiner
.. 20.7.25, in subarctic habital. The liverwort i
02-02-2026 21:46
Margot en Geert VullingsOn a barkless poplar branch, we found hairy discs
02-02-2026 14:55
Andgelo Mombert
Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome
02-02-2026 14:33
Andgelo Mombert
Bonjour,Sur le thalle de Peltigera praetextata, ne
31-01-2026 10:22
Michel Hairaud
Bonjour, Cette hypocreale parasite en nombre les
02-02-2026 09:29
Bernard CLESSE
Bonjour à toutes et tous,Pour cette récolte de 2
01-02-2026 19:29
Nicolas Suberbielle
Bonjour, Marie-Rose D'Angelo (Société Mycologiq
Groet Hans
You quote the spores as 7.5 -19.5 but looking at your micrograph they all look to be in the 7.5-9.5 range. Which is right? The colour does tend to vary but your spores do look quite pale for klenii so I think P crystalinus is the most likely. (unless the spores do reach 19.5)
Mal
"Spores 7.5 - 19.5" is a quotation from the key.
The spore sizes I measured: Me: 10.2 x 6.4 µm, N = 10
So I will name this find P. cristallinus!
Thank you very much for your help!
Riet
To be sure ...
This afternoon I will measure the spores ejected to the lid of the plastic box.
To be continued Hans :-) Dank je voor jouw reactie!
The sporangia on the lid showed already two kinds of spores.
So nice (and very educational) to see the difference!
Key:
Spores 7.5-11 x 5-7.5 µm, pale yellow ...................................................P. crystallinus
Spores 10-19.5 x 5.5-9.5 µm, usually deeper yellow/orange....................P. kleinii
It was very hard to find a fruitbody of P. kleinii, but in the end I succeeded :-)
Mooi succes. Groet
Hans
Groetjes, Riet
I do have the following documentation if you are interested:
Sul genere Pilobolus Tode 1874. Contributo allo studio dei funghi fimicoli XXIX.
The biology and taxonomy of Pilobolus. Researches on fungi volume VI.
Species of Pilobolus and Pilaira from India.
Taxa of Pilaira (Mucorales, Zygomycota) from China
Joop
Greetings, Riet