Purchased some years ago from a local nursery with the name "Orange Oak". Avg. oak type leaf is 6" x 3'. Croton is ground planted and receives morning to late afternoon sun. Jan. Photos here.
I had (lost in our cold winter a few years back) a Philip Geduldig growing a few feet from this plant and it looked different. Here is a photo of a cutting that came from the plant this past summer. This one is growing in morning sun only. Leaf size changes by 3".