Leaf 

"Leaf" is a simple yet expressive drawing by Karl Ballenberger, a German artist active in the 19th century. The work, created with pen on paper, features a single leaf rendered in precise detail. The contour lines of the leaf are the sole focus of this drawing, capturing its shape and form with minimal detail. This single element on a light background creates a sense of elegance and stillness, reflecting the artist's interest in natural forms and detailed observation. The drawing currently resides in the Städel Museum, offering a glimpse into Ballenberger's meticulous approach to nature.