Fir tree 

"Fir Tree" is a graphite drawing by Louis Eysen, a German artist born in 1843. The artwork, currently housed at the Städel Museum, features a solitary fir tree rendered in meticulous detail, capturing the texture and form of the foliage. The piece showcases Eysen's skill in capturing the essence of nature through precise lines and subtle shading, highlighting his meticulous observation of the natural world. This drawing is a fine example of 19th-century realism, a movement that emphasized accurate depictions of everyday subjects.