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18-05-2026 19:49

Acrodontium sp?
William Slosse William Slosse

Good evening all,recently I found a portion of a S

18-05-2026 12:43

Hymenoscyphus fraxineus
Sylvie Le Goff

Bonjour à tousPuis je avoir votre aide sur ce que

18-05-2026 10:13

Teleomorph of Botrytis cinerea?
Lieve Deceuninck Lieve Deceuninck

Dear forum members,I identified this as the teleom

17-05-2026 22:09

Mollisia sp
éric ROMERO éric ROMERO

Bonjour tous, Je sollicite vos avis pour ce Molli

17-05-2026 19:05

Coenogonium pineti
Thomas Flammer

I have found this tiny 200 ym cup shaped apothecia

17-05-2026 16:41

Lachnum
Margot en Geert Vullings

We found this Lachnum on an old Rubus stem.Fruitbo

05-04-2026 22:46

blue mould from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

on wood of Ceratonia, Algarve, 3.4.2026.The color

15-05-2026 13:33

Cistella geelmuydenii cf
Sylvie Le Goff

Bonjour à tousJe serais très reconnaissante enve

16-03-2011 14:31

Peziza cf ampelina
roman vargas alberto

Hi. I would like some opinion about this Peziza

14-05-2026 05:36

Lachnum subvirgineum (?)
Ethan Crenson

Hi all,  I haven't paid much attention to Lachnu

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Parasite on Trochila ilicina?
Vitus Schäfftlein, 28-04-2026 20:33
Hello,

I found Trochila ilicina on Ilex aquifolium (1). Curiously, the part visible on the leaf undersurface happened to have white spots with a central small hole (2). Whilst separating the white part, a macroscopically visible cloud of white conidia escaped from the hole. Under the microscope, I could observe massive amounts of said conidia (3, 4). The conidiophores mostly consisted of just one conidiogenous cell, some were branched once. The conidia themselves measured 12,5 ± 0,4 µm × 2,3 ± 0,3 µm, Q = 5,6 ± 0,7 (5). Does anyone have an idea what species this could be?


Best regards,
Vitus

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Hans-Otto Baral, 28-04-2026 20:45
Re : Parasite on Trochila ilicina?
Isn't this the anamorph? It reminds me of the ?Cryptocline anamorph of Tr. laurocerasi.
Martin Bemmann, 28-04-2026 21:15
Martin Bemmann
Re : Parasite on Trochila ilicina?
check Phacidium/Ceutospora:


Regards

Martin
Hans-Otto Baral, 28-04-2026 21:27
Re : Parasite on Trochila ilicina?
You are obviously right, Martin. On Prunus laurocerasus it is Phacidium lauri, and on Ilex either the same, or Phacidium lacerum.
Vitus Schäfftlein, 29-04-2026 05:59
Re : Parasite on Trochila ilicina?
Thanks for the replies! The study you cite, Martin, does not explain the morphological differences between Phacidium lauri and Phacidium lacerum. Do you two know whether there are ways to morphologically distinguish these two species, or any more literature on it? I'm asking because it is supposed to be mapped.

Best regards,

Vitus
Martin Bemmann, 30-04-2026 12:12
Martin Bemmann
Re : Parasite on Trochila ilicina?
Hallo Vitus,

the host identification should help. Ph. lacerum appears typically  on needels of conifers (mainly Pinus) but is also reported on postharverst pest on Rosaceae as apples and pears.

@Zotto: do you know of records of Ph. lacerum on Ilex as well?

Martin
Hans-Otto Baral, 30-04-2026 15:43
Re : Parasite on Trochila ilicina?
I took this from the article you indicated. Did I read something wrong?
Martin Bemmann, 30-04-2026 16:40
Martin Bemmann
Re : Parasite on Trochila ilicina?
Oh yes, I overlooked this....


DiCosmo et al. 1984 on Phacidiaceae you will find here:


Martin