

This Philadelphia professor wrote the first American botany textbook, seeding the study of plants in a new nation.
Benjamin Smith Barton was a man of the American Enlightenment, a Philadelphia intellectual who turned his keen eye to the natural world. Appointed as a professor of natural history and botany at the University of Pennsylvania while still in his twenties, he filled a void in the young republic's scientific education. He was less a laboratory recluse and more a voracious collector and synthesizer of knowledge, amassing a huge herbarium and corresponding with thinkers across the Atlantic. His 1803 textbook, 'Elements of Botany,' became the standard work for a generation of students and doctors, for whom plant knowledge was essential to medicine. Barton also mentored the young Meriwether Lewis, preparing him for the botanical discoveries of the Lewis and Clark Expedition, though a dispute over credit for this work clouded his later years.
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He suffered from poor health for much of his life, including a condition that affected his vision.
His uncle was David Rittenhouse, the noted American astronomer and inventor.
He originally studied medicine in Edinburgh but left before completing his degree.
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