"Tansy is a genus of Compositæ, numbering about 50 species of strong-scented herbs, often shrubby below, with alternate usually much-divided leaves, and solitary or corymbose heads of rayless yellow flowers. The genus is represented in North America, Europe, North and South Africa, temperate and cold Asia. Common tansy has long had a reputation as a medicinal herb, causing it to be much grown in gardens in the past."—(Charles Leonard-Stuart, 1911)

Tansy

"Tansy is a genus of Compositæ, numbering about 50 species of strong-scented herbs, often shrubby…