Leaf of the Day - Day 12

Two beautiful Sycamores.

The black spots don't mean that the tree has been cursed by pirates. They're caused by a fungus (Rhytisma acerinum). 

So-called Tar Spot Disease is seen most commonly on Sycamore, but can also affect a number of other trees in the Acer family including Maples. The disease can cause slightly premature leaf fall but, thankfully, has no long-term effect on the health of the trees.