Alex Katz is primarily known for his portraiture that synthesizes a kind of color field abstraction with realism; however, nature is a subject that the artist has depicted consistently since the early 1950s. Untitled (Leaves) from 2008, is a 9 x 12" acrylic painting on board featuring a closeup view of a tree. Katz uses luscious brushstrokes in contrasting shades of green to distinguish the dense dark forest of the background with the light green leaves of the tree in focus. [https://www.artnet.com/auctions/artists/alex-katz/untitled-leaves]