They have a unique look with the way the white on the trunk is highlighted with black (I'll call them divets).
As far as landscapes go, I love the fall when the leaves turn their glorious colors of reds, yellows, and oranges. I tried to capture those colors in my paintings.
Here are two that I painted.
This one is 16x20 acrylic on canvas:
This one is Watercolor on cold press paper.