Classic texts: King's 1898.
Eupatorium purpureum
Eupatorium purpureum L.
Engl.: gravelroot, sweet-scented Joe Pye weed, gravel root, gravelweed, green-stem Joe Pye weed, Joe Pye weed, jopi weed, marsh-milkweed, purple boneset, purple Joe Pye weed, purple-flowered boneset, queen of the meadow, sweet Joe Pye weed, trumpet-weed.
Deu.: Purpur-Wasseredost.
Suom.: purppurapunalatva.
Sven.: rosenflockel.
Bot. syn.: Eupatoriadelphus purpureus (L.) King & H. E. Robins, Eupatorium falcatum Michx., Eupatorium holzingeri Rydb., Eupatorium trifoliatum L.
Chapter XIX. Special Remedies for the Pregnant Woman.
Classic texts: Eli Jones' Definite Medication, 1911.
Pilulae Oleoresinae Eupatorii Compositae.—Compound Pills of Oleoresin of Queen of the Meadow.
Classic texts: King's 1898.
The Medical Flora of Kansas: Dioscorea - Gymnocladus.
Classic texts: Journals: TNEMA 1882-1883.
Eupatorium Purpureum. Queen of the Meadow, Gravel Root, Joe Pye Weed.
Classic texts: Cook 1869.
Coltsfoot toxicity.
Henriette's herbal blog: "Coltsfoot" includes both Tussilago and the various species of Petasites.