Ynes Mexia. Pioneer of Botany

She began collecting plants at the age of fifty-five. Ynes Mexia proved that life can be started anew, even when others are already retiring.

Botany as Salvation

Mexia arrived at a sanatorium in San Francisco as a forty-year-old woman with a broken psyche. Two marriages behind her, the family ranch business in ruins, three decades spent in Mexico managing a hacienda after her deceased father. Now she was alone. Sick. Without a future.

Treatment lasted ten years. During this time, she began participating in Sierra Club excursions. She walked through California forests. She observed sequoias, birds, plants. Something in her broke or the opposite: something came together in her. Nature did not ask about age or history of failures. It offered only one thing: the possibility of looking and understanding.

In 1921, at the age of fifty-one, she enrolled in botanical studies at Berkeley. Most of her classmates could have been her daughters. This did not stop her. Four years later, she set out on her first expedition to Mexico with Stanford. She did not yet know that she had just discovered a vocation that would transform all of botany.

Solitary Journeys Across Continents

Mexia traveled alone. On horseback, in trousers, through territories where a woman with a butterfly net aroused astonishment or pity. Part of the botanical community shook their heads: it’s impossible for a woman to manage in the Amazon or Tierra del Fuego. She showed that not only was it possible, but effective.

In 1929, she began an expedition that lasted two and a half years. Four thousand eight hundred kilometers through the Amazon, all the way to the river’s source. She lived with the Araguaruna tribe. She collected plant specimens in conditions that broke experienced men. She did not complain, did not dramatize. She simply worked.

By 1938, she had collected one hundred forty-five thousand specimens. Five hundred of them turned out to be species unknown to science. In 1926, she discovered a plant that was named Mexianthus mexicanus. This was her ticket to botanical history. But for her, something else mattered: each expedition revealed another fragment of the world that was worth protecting.

Legacy Written in Herbaria

Alice Eastwood, a renowned botanist, valued Mexia for her precision. Her collections went to herbaria in California, New York, Berkeley, as well as to European institutions. She published in prestigious journals. In 1932, together with Edwin Copeland, she published a book on Brazilian ferns. Mexia became an authority.

She was sixty-eight years old when lung cancer was diagnosed during an expedition to Oaxaca. She returned to San Francisco. She died quickly. But she managed to write a will that said everything about her priorities.

She bequeathed most of her estate to the Sierra Club and Save the Redwoods League. She wanted the California sequoias to survive. She also financed Vernon Bailey’s project: humane animal traps. She left no children or family. She left forests and plants that, thanks to her, have a chance to survive.

Mexia proved that a late start does not have to be a failure. That one can set out into the world at retirement age and accomplish what others have not done in a lifetime. Her notes still lie in the Berkeley archives. Her collections still help scientists. And her story still shows that determination has no expiration date.

SELECTED BIBLIOGRAPHY:

• https://www.britannica.com/biography/Ynes-Enriquetta-Julietta-Mexia
• https://www.calacademy.org/scientists/library/untold-stories/ynes-mexia
• https://www.nybg.org/blogs/science-talk/2015/02/late-bloomer-the-short-prolific-career-of-ynes-mexia/
• https://theglindafactor.com/ynes-mexia/
• https://daily.jstor.org/ynes-mexia-botanical-trailblazer/