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04-07-2025 20:12

Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

03-07-2025 20:08

Francois Guay Francois Guay

I found this interesting yellowish asco growing on

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

02-07-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello, bonjour.Here is the paper I'm searching for

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Xylaria sicula ?
Stephen Martin, 08-11-2016 19:52
Stephen MartinDear friends. A common Xylaria here on the Maltes islands is that found on fallen olive leaves in humid and shaded areas. I took some specimens to educate and learn on this genus and following a key online: [http://pyrenomycetes.free.fr/xylariaceous/keydir/dichotomickey.htm]

I did not went into much work, because xylaria on olive leaves is quickly keyed out as Xylaria sicula.

When I checked the details I found one mismatching character, apart that the spores were on the lower end of the range.  X. sicula should have a swollen fertile head close to the apex which I colud not see in my specimens.

Any feedback?

  • message #45689
  • message #45689
  • message #45689
  • message #45689
  • message #45689
Jacques Fournier, 08-11-2016 21:06
Jacques Fournier
Re : Xylaria sicula ?
Hi Stefen,
this is likely X. sicula but at conidial state. What you observed are conidiospores.
The sexual state will occur later and will be black, thus less conspicuous in the leaf litter.
Cheers,
Jacques
Stephen Martin, 08-11-2016 22:53
Stephen Martin
Re : Xylaria sicula ?
Thank you very much Jacques, I understand perfectly. I will check carefully the leaf litter for capitate apices.