Arum fungus

[markwilson]

Could this be something like a Phoma on Arum maculatum in Essex

[Chris Yeates]

Hello Mark

I've seen similar things and they never turned out to be fungal. In any case Phoma and Phyllosticta species do not affect their substrates in this way - for example there is no evidence of any dead plant material associated with the dots in your images.

Without seeing much more detail of the dots I can't say more. It's always worth seeing whether such dots are superficial and can be removed with, say, a damp tissue.

Regards
Chris

[markwilson]

Thanks Chris.

I know for next time

Mark