A folk remedy a Shropshire woman gave Withering for dropsy, recorded across ten years of careful clinical observation, and published in An Account of the Foxglove in 1785. The founding monograph of modern cardiology. The woman's name was never written down.
Linnaeus gave the genus its binomial in Species Plantarum (Stockholm, 1753) — Digitalis, "of the finger," from Leonhart Fuchs's earlier De Historia Stirpium (Basel, 1542), where the German vernacular Fingerhut ("thimble") was translated into Latinate form. Purpurea for the colour of the corolla.
The plant grew, and grows, throughout western and central Europe — Britain, Ireland, Iberia, France, the Low Countries, into Scandinavia. Acid soils, woodland clearings, hedgerows, the disturbed ground after a fire. It is a biennial: a rosette of soft leaves the first year, a single flowering spike of twenty to eighty bells the second, ascending. Then seed, then nothing.
It is poisonous. Every part of it. Cattle leave it alone. Children are warned about it. Folk medicine, nonetheless, has used it for at least a thousand years for the dropsy — what we now call congestive heart failure.
| Rank | Designation | Author · Date |
|---|---|---|
| Kingdom | Plantae | — traditional |
| Clade | Angiosperms · Eudicots · Asterids | APG IV, 2016 |
| Order | Lamiales | Bromhead, 1838 |
| Family | Plantaginaceae — moved from Scrophulariaceae | Olmstead, 2001 |
| Genus | Digitalis | L., 1753 |
| Species | Digitalis purpurea | L., 1753 |
William Withering, a Birmingham physician, was shown a folk recipe in 1775 by an unnamed Shropshire woman. Twenty herbs in the brew; one — foxglove — did the work. He recognised it. He spent the next decade finding the right preparation, the right dose, and the line between medicine and poison.
The 1785 monograph, An Account of the Foxglove and Some of Its Medical Uses, did three things at once: catalogued 163 cases with outcomes, described the pharmacology of a single isolated active principle, and warned — in plain language — against overdose. It is recognisably a modern clinical paper a hundred years before there was a modern clinical paper.
The active glycoside, digitoxin, was crystallised by Nativelle in 1869. Digoxin, its better-tolerated cousin, came in 1930. As of the date of this folio it is on the WHO Model List of Essential Medicines. The Shropshire woman is unrecorded; she did not write it down, and Withering, who gave her the credit in his preface, never named her.
The pattern is older than this folio and will outlast it. Someone who is not a doctor knows something a doctor does not. A doctor takes the time to write it down. Ten years pass. The thing is now medicine. The someone is not in the index.
Project Lavos believes in observation, in attribution, and in the long patience that turns folk practice into reproducible work. Digitalis purpurea is one such case. There are others.