Similar to Chloridium sp.

Growing on the pulp of a fallen fruit of Hawthorn (Crataegus monogyna) was a dark mycelium with white heads which took my curiosity to investigate. Under the microscope I could see a simple, dark-coloured (blackish-brown) septate conidiophore (somewhat paler at the tips or undeveloped ones) with a small head-like cluster of hyaline-white conidiospores. These are liberated readily in water or soap water, so I suspect that there is some slime involved. However, at the location where the conidia are present are 3-6 small, flattened plugs projecting out onto which clusters of spores are attached. The spores are subglobose to oval, variable size, possible not hyaline but opaque since spore contents (eg oil bodies) are not seen.

I forgot to add that I managed to get a pure colony on Sabourad Agar. It formed a white or light grey mycelium without quick fruiting bodies. These were formed after 1 week when the mycelium covered the whole plated and they were formed at the walls of the petri dish (drier regions ?), somewhat not that black and shorter. Now I have inoculated OAT, PDA and CZapek to see if it helps. Really wish to learn this microfungus. Chloridium is close but spores are larger 10-17 um long, 8-11 um wide

I think you are correct (or Botryotinia) but it must be a species that does not have a branched conidiophore. I always associated Botrytis with a branched conidiophore (that is I have always seen B. cineraria). I see what I find in this genus with large spores. B. elliptica for example!.

Thanks for the moment !

Zitat von thorben96

Hi Steve,

compare with Botrytis sp.

best regards,

Thorben

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