Leaf 

"Leaf" is a simple, yet detailed pen and ink drawing by Karl Ballenberger, a German artist known for his botanical illustrations. The artwork depicts a single leaf with intricate detail, highlighting the delicate structure and form of the natural world. The simplicity of the drawing, with its subtle shading and crisp lines, suggests a focus on precise observation and accurate representation. This piece is a testament to Ballenberger's skillful depiction of the beauty found in the everyday. It is currently housed in the Städel Museum.