Ecology, Empire, Emoji: The Bittersweet Story of the Ancient Plant That Originated the Heart Symbol
By Maria Popova
There we were: Three women — a neuroscientist, a mycologist, and me — talking about the perplexities of love when a cloud in the perfect shape of a broken heart appeared in the gloaming sky backlit by the sun setting over the Andes. Suddenly, we found ourselves wondering about the origin of the heart icon as the universal symbol of love. It doesn’t figure into the hieroglyphics of the Egyptians or the Aztecs’ elaborate pictogram language of embodied emoji, and yet by the time of the Romantics, it had become a fixture of love letters and lockets, Queen Victoria’s favorite jewelry shape, recognized today by every culture in every language, dominating tattoo parlors and text threads, drawn into the wet sand by our children, traced on our backs by our lovers, emblazoned on the tombstones of our dead.
The answer, drawn out by the tenuous thread of selective collective memory we mistake for history, is a story of empire and ecology, of love and ruin and more love.

In 1990, Expedition magazine published an image of a coin excavated almost a decade earlier at the Sanctuary of Demeter and Persephone in Cyrene, present-day Libya. Emblazoned on the silver drachm circa 500 B.C.E. is a small heart so familiar it feels strangely modern — a depiction not of the human organ but of the seed of a mysterious plant, whose stem and bloom appear on the back of another Cyrenean coin.
The ancients called it silphium. Its fate may be the first case of extinction in the common record. Its legacy is the most enduring graphic symbol of the modern world.
With its golden pom-pom blossoms and neatly fractal branches, silphium didn’t just look magical — it was heralded as a panacea. But none among its panoply of medicinal properties was more revered than its dual potency as aphrodisiac and contraceptive, which earned it the moniker “the lovers’ plant.” In a society where women had no political power and no civil rights, here was a path to empowered embodiment, here was a plant that put their pleasure and their reproductive rights into their own hands.
But despite how meticulously the ancients tended to their silphium, it resisted cultivation. Hippocrates himself reported two failed attempts to transplant it from Cyrene to Athens. Long before Erasmus Darwin sensationalized the sexual reproduction of plants, before Gregor Mendel seeded the modern science of genetics, the Greeks had no way of understanding how silphium’s peculiar evolutionary adaptation crippled it, made them all the more responsible for its survival.

A monoecious shrub, silphium grows both male and female flowers on the same plant, the male ones fruitless and the female ones giving the heart-shaped seeds. But unlike the androgynous plants known as “perfect flowers” — which contain both the male pollen-producing stamen and the female ovule-producing pistils, and can therefore self-pollinate — silphium’s female flowers grow under the leaves and the male ones above, so that they need the help of an insect or a human gardener to pollinate.
For seven centuries, the Greeks meticulously tended to it, passing down the lore of its vulnerable secret from generation to generation. By the time of the Roman Empire, silphium had become so precious that it was traded at the price of silver and accepted as tax payment to be held at the public treasury.
But as the Romans began their brutal conquest and cultural assimilation, they did what all colonizers do, discounting the indigenous knowledge that had ensured silphium’s survival. By the first century of the modern era, Pliny the Elder lamented in his Natural History that only “a single stem was found.” In a cruel twist of irony, the last of this ancient symbol of female empowerment was given to the troubled tyrant Nero, who famously murdered his mother and all of his wives, then played his lyre while Rome was burning before committing suicide.

Considered extinct for two thousand years, silphium grew so remote in our collective memory that some began to doubt it ever existed.
But then came a bright testament to how the love of life and of truth is always more powerful than the lust for power: In the early 2020s, Turkish botanist Mahmut Miski, leading a group of researchers and farmers in Anatolia, discovered a rare endemic shrub — Ferula drudeana — whose morphology and chemical properties closely match the ancients’ descriptions of silphium.

Two civilizations after the Greeks failed to cultivate the precious plant, Miski and his team found that it could be grown in a greenhouse using cold stratification — a process of breaking seed dormancy by mimicking winter conditions: cold, moist, and dark. This means that, with proper tending, silphium can go the way of the black robin, the way of the ginkgo, and come back from extinction, its tiny hearts once again growing roots and shoots into Earth’s soil — a lovely reminder that even after all the depredations of time and terror, the heart can come back to life.
















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