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08-06-2026 17:00

François Bartholomeeusen

Good day everyone, On June 5 2026, I collected de

08-06-2026 10:16

Spooren Marco Spooren Marco

I don`t have a clou about this fungus,it is not in

07-06-2026 18:18

Mario Schulz

Hello everyone, i found on 31.5 the following Mol

07-06-2026 15:10

William Slosse William Slosse

Hello everyone,On 05-06-26, I found following asco

05-06-2026 11:02

Thomas Læssøe

https://svampe.databasen.org/observations/10596691

07-06-2026 12:09

François Freléchoux François Freléchoux

Bonjour, Voici une brève description de ce qui m

07-06-2026 12:43

Steve Clements

Bojour. This was a strange find on a stick on my

12-07-2015 00:05

Nedim Jukic Nedim Jukic

This one from the same locality as the previous on

06-06-2026 17:44

Steve Clements

Bonjour, This disco was on planed wood 3 x 1.5 cm

14-08-2016 23:15

Alex Akulov Alex Akulov

Dear friendsCan you help me to find the descriptio

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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?
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