Achillea millefoliumyarrow. If the North American and Eurasian yarrows were ever distinct, they no longer are so. Yarrow is in the words of the Jepson Manual, 2nd ed., a "highly variable polyploid complex" considered to be one species wherever it occurs. Thus, Achillea millefolium is one of the most widely distributed plants in the world. The genus name derives from Achilles, who used yarrow to stanch bleeding of men wounded in battle. The plant photographed is located along a public pathway in Berkeley, CA.
Kohler's Medizinal-Pflanzen in naturgetreuen Abbildungen mit kurz erlauterndem Texte :.Gera-Untermhaus :Fr. Eugen Kohler,[1883-1914].biodiversitylibrary.org/page/303704
Herbarium Blackwellianum emendatum et auctum, id est, Elisabethae Blackwell collectio stirpium.Norimbergae : Typis Io. Iosephi Fleischmanni, 1750-1773..biodiversitylibrary.org/page/291055
