There are very small pores on a leaf that transpire when a plant gets too hot. These pores are called Stomata. Not to be confused with Stigmata, unless of course, you are into religion. The type of religion that allows one to become obsessed with every symbol in a Beyonce music video that hints the illuminati, or everything that resembles God and Satan when watching Harry Potter. If you want to be religious with it, the way I do… rather the way I am.. Then confuse those pores with the sores of Jesus. Confuse those leaves to be hands and those holes to be represented of the crucifixion of Christ himself.
Then again, if you aren’t into that. Then they are simply passages of transpiration.