I took a few shots on Saturday that I thought were good enough to share. I have to admit, for a plant-kinda-gal, I really am not sure what kind of tree these leaves came from. Sort of look like maple or sycamore, but I really don’t know.
What I do know is that those perfect circles of death cannot be good. I also know that every tree of this type in my whole town has this disease, whatever it is. I do like how the shamrock looks like grapes in the grass.
I feel a bit guilty for finding beauty in what is probably painful for my arboreal friends.
I love black and white photography. I have a colour shot nearly identical to the last one, but the leaves do not glow like they do here! Maybe I’m just shite at colour pics.
heretherebespiders 
Haha, I must admit I thought it was grapes at first look. It’s only after a few seconds I realized these were… Why don’t you call them “clover”, is shamrock a more specific or more regional term?
I’m not a big fan of B&W photography, but I admit then, when well used, it makes for an interesting artistic rendering. I think many people overuse B&W. In particular in an autumn setup, which means a lot of colors, I wouldn’t have considered B&W. But hey, you did well and the result is something interesting to my eye.
I think these leaves might be from some variety of mapple, but I’m no more an expert and wouldn’t say for sure.
About the “circles of death”, have they been there every year for a while, or was it something new this year? It sure doesn’t sound good….
Clover is rather like shamrock – but as I’m in Ireland, I’ve learned the difference! We even have an Irish pronunciation, let me see if I can do it here: SHAM-rogue (not like the colour, but like a thief in the night kinda rogue).
The last pic is my favourite, as they were still on the tree and green, but glowed white. The black spots… Been around many a year. Seems not to kill the tree but it can’t be good.
Horse chestnut with local autumn fungus? just guessing!