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30-05-2026 21:12

Lachnellula sur mélèze
Philippe PELLICIER

Sur branche de mélèze (Larix) près de la neige,

25-05-2026 16:35

Anamorphe d'Hypomyces aurantius ? sous saule cendré (Salix cinerea)
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,J'ai trouvé récemment,

29-05-2026 15:35

Fusarium sur Robinier
daniel FERRE

Bonjour à tous,Je voudrais votre aide pour cette

28-05-2026 16:15

Literature request: Caloscypha fulgens f. caesioalba
James Mitchell

Hello,Does anyone have the original publication of

28-05-2026 11:06

Stictidaceae (?) on Typha latifolia - short-spored, I+ - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10596750

23-05-2026 11:44

Coprophilous pyrenomycete wild boar dung
Charles Grapinet Charles Grapinet

Hello, I am having trouble identifying this copro

25-05-2026 16:44

Ascomata under epidermis Carex
François Bartholomeeusen

Hi forum members,During an excursion organised by

26-05-2026 21:25

small ascomycetes on Quercus sp.
Dirk Gerstner

Hello everyone, I'm completely stumped by this li

26-05-2026 22:44

Incrucipulum capitatum ?
Ethan Crenson

Hi all, I think I have Incrucipulum capitatum her

22-05-2026 14:44

minute Saccobolus from cow-dung (moist chamber from Portugal)
Lothar Krieglsteiner Lothar Krieglsteiner

in unripe condition citrine yellow, then soon fadi

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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