RHoman's picture

Micro fungus on Geranium pratense

Observed: 30th April 2011 By: RHomanRHoman’s reputation in Fungi and LichensRHoman’s reputation in Fungi and LichensRHoman’s reputation in Fungi and Lichens
geranium1 1

Discoloured upperside of G pratense leaf with yellowish blotches which are mirrored on the underside by patches of white.


Caution: Do NOT use iSpot to identify fungi to eat!

Some fungi are very poisonous so a mistaken ID could have serious consequences.

Species interactions

No interactions present.


Fenwickfield's picture


Thought it was mildew at first,I think it is this dry weather stressing the plants and making them more susceptible to diseases.


Blewit Boy's picture

This looks more...........

This looks more like leaf miner damage to me.


RHoman's picture

Leaf miner

It would make life easier if it was a leaf miner as there are very few species involved with Geraniums. However, there is no evidence of internal feeding and the changes to the leaf are all external.

Robert Homan

Fenwickfield's picture

Don't think that

I really don't think it is leaf miner for the exact reason's you have just stated,it is either viral or fungal,but sadly I do not know which.