A portrait of botanist Daniel Cady Eaton by John Ferguson Weir. Eaton is depicted holding a sprig of fern, a reference to his botanical specialisation.

This portrait by John Ferguson Weir depicts Daniel Cady Eaton (1834-1895), an American botanist. Eaton was a professor at Yale University, specialising in ferns. He authored several books on North American ferns and was a member of scientific societies. Weir, also associated with Yale as the director of the Yale School of Fine Arts, painted this likeness of Eaton, likely as a commission for the university or Eaton's family. The painting shows Eaton in a dark suit, white shirt, and black tie. He holds a sprig of fern in his right hand, a subtle nod to his botanical expertise. The background is a muted dark grey, which keeps the focus on Eaton's face and upper body. Weir's brushwork is visible, particularly in the rendering of Eaton's hair and the details of his suit. The overall effect is one of quiet dignity and intellectual seriousness, befitting a respected academic of the late 19th century. The portrait captures Eaton's likeness and hints at his contributions to the field of botany.