During my wander through a local woodland earlier this week, while admiring the golden carpets of Lesser celandine, I noticed small spots on some of the leaves. Closer examination and some photos showed that this was the rust Uromyces dactylidis, also known as Celandine clustercup fungus for the clusters of tiny orange cup-shaped aecia on the undersides of the leaves.

Once I had my ‘rust eye’ in, I then noticed more on other plants. Many, like Bluebell rust (Uromyces muscari) I have covered here before but this one, Melampsora epitea on Spindle (Euonymus europaeus), was a new one for me.