Classic texts: King's 1898.
Conyza canadensis
Conyza canadensis (L.) Cronq.
Engl.: Canadian fleabane, Canadian horseweed, butterweed, coltstail, fireweed, fleawort, hogweed, horseweed, mare's tail, prideweed, scabious.
Deu.: Kanadisches Berufkraut.
Suom.: kanadankoiransilmä.
Sven.: kanadabinka.
Bot. syn.: Erigeron canadensis L., Leptilon canadense Britt. & A. Brown, Trimorpha canadensis (L.) Lindm.
580. Erigeron.—Fleabane. Daisy Fleabane. 581. Erigeron canadense.—Canada Fleabane.
Classic texts: Sayre 1917.
The Medical Flora of Kansas: Dioscorea - Gymnocladus.
Classic texts: Journals: TNEMA 1882-1883.
Notes on a Few Drugs.
Classic texts: Journals: AJP 1887. Oil of erigeron; Oil of peppermint; Oil of bay; Popp's stomach powders; Ground flaxseed; Job's tears.
Fluid Extracts of the New Pharmacopoeia. Part IV, cont'd.
Classic texts: Journals: AJP 1883.
Epilobium.
Henriette's herbal blog: It's easy to pick great willowherb in quantity.