Asa Gray: The Birth of American Botany’s Greatest Voice
This botanical history post was featured on The Daily Gardener podcast:
November 18, 1810
On this day, Asa Gray (1810-1888) was born. He was a figure who would become America's preeminent botanist and one of the most influential scientists of the 19th century.
Born to Moses and Roxana Gray in Paris, Oneida County, New York, young Asa's earliest job involved feeding bark into his father's tannery mill and driving the horses - hardly a hint of the botanical legacy he would leave behind.
As a boy, Gray showed early signs of his future passion. He would write verses in his sister's album from Horace Smith's "Hymn to the Flowers":
There, as in solitude and shade I wander
Through the green aisles, or stretched upon the sod,
Awed by the silence, reverently ponder
The ways of God
His first encounter with botany came through an unlikely source - an article in Brewster's Edinburgh Encyclopedia. The young Gray watched eagerly for the first spring flower, which turned out to be the delicate Claytonia Virginica. This simple discovery sparked a lifelong devotion to botanical science.
While Gray earned his M.D. from the College of Medicine and Surgery in Fairfield, New York, in 1831, he never practiced medicine. Instead, his path led him to Harvard University, where in 184,2 he became the Fisher Professor of Natural History. Under his leadership, Harvard's botanical facilities flourished - the herbarium, library, and garden growing from modest beginnings into world-class resources.
Perhaps Gray's most enduring legacy was his role in advancing Darwin's theory of evolution. In 1857, Charles Darwin sent him a confidential letter outlining his theory of natural selection, making Gray one of the first scientists to learn of Darwin's revolutionary ideas.
Gray became not just a supporter but a crucial advocate for Darwin's work, particularly in America, while maintaining his own deep religious faith. He famously described natural selection as,
Not the wind which propels the vessel, but the rudder which, by friction, now on this side and now on that, shapes the course.
His character as a teacher and mentor was legendary. Liberty Hyde Bailey recalled how Gray would enter the herbarium "on a half-run," attacking bundles of plants and calling out their names without hesitation.
Even at seventy-two, he maintained such physical vitality that he once leaped over the heads of visitors seated on the garden house steps, landing safely at the bottom.
Yet behind this energy lay a profound dedication to systematic study. Gray became the unofficial chronicler of American botany, writing over 320 botanical obituaries and building an unparalleled knowledge of plant specimens, taxonomic relationships, and botanical literature. His herbarium became the unchallenged headquarters of American botany, with Bailey noting that,
Everyone who had any idea of going into botany had to come to see Gray, even if they just stood around and looked at him through the window.
Throughout his long career, Gray served as more than just a scientist and teacher - he became the unofficial chronicler and eulogist of American botany. From the 1840s onward, he presided over the memorials of his botanical colleagues, writing over 320 obituaries and preserving crucial biographical information about America's early botanists.
As he reflected on this duty in his later years, Gray noted with a touch of melancholy,
Such things are great drawback to the privileges of old age. You get left so alone, especially childless people, like Mrs. Gray & I.
But we slip away all the easier for it when the time comes.
The weight of recording these passings fell particularly heavy in 1873, the year of his retirement when many of his contemporaries died in quick succession. John Torrey, William Starling Sullivant, and Louis Agassiz all passed away, leaving Gray increasingly alone as the elder statesman of American botany. Yet he continued his work with characteristic dedication, even as he witnessed the gradual departure of so many colleagues and friends.
Tragically, Gray suffered a stroke on November 28, 1887, while working on The Grapevines of North America. He passed away on January 30, 1888.
At his funeral, Francis Greenwood Peabody read from Scripture, "Consider the lilies of the field, how they grow," a fitting tribute to a man who had devoted his life to understanding the natural world.
Asa Gray's biographer noted that years before his own death, Gray had helped his friend, the botanist William Darlington, with the Latin for an elaborate epitaph for his tombstone.
But it was not for Gray who said,
I should not fancy one for my own.
His grave at Mount Auburn Cemetery bears a simple inscription: "Asa Gray 1810-1888" - modest markings for a man who transformed American botany and helped bridge the gap between science and faith in an age of revolutionary scientific discovery.