Partheniwn, febrifuga, metrica-ria, from matrix. Common feverfew, featherfew, or febrifuge, matricaria parthenium Lin. Sp. Pl. 1255.

This plant hath firm branched stalks and roughish leaves, each of which is composed of two or three pairs of indented oval segments, set on a middle rib, with an odd one at the end, cut into three lobes; the flowers stand on the tops in the form of an umbel, consisting each of a number of short white petals set round a yellow disk, followed by small striated seeds. It is perennial, grows wild in hedges, in cultivated places, and flowers in June.

The leaves and flowers have a strong, not agreeable, smell, with a bitterish taste, both which they communicate to water and spirit. On distilling a large quantity of the herb, a yellowish strong scented essential oil is found on the surface of the water: rectified spirit carries off but little of its flavour in evaporation. The spirituous extract contains a large share of the virtues of the plant, which is esteemed as a warm aperient, carminative, and bitter. It resembles, in sensible qualities and botanical affinities, the camomile, and keeps its virtues for several years. Its oil is called ol. partheniacum. See Raii Historia; Lewis's Materia Medica; Neumann's Chemical Works.