Achille'a Millefo'lium, Yarrow, Milfoil. -- The leaves and flowering tops, U.S.P. 1860-1870; N. America. Perennial herb, .3-.6 M. (1-2 degrees) high, hairy; leaves lanceolate, glandular beneath, 5-25 Cm. (2-10') long, twice pinnatifid, segments toothed; flowers Aug., corymbs, receptacle flat, chaffy, ray-florets white, pistillate; disk white, perfect; fruit achenes, chamomile odor, taste bitter, aromatic; contains volatile oil, achilleine, resin, tannin. Stimulant, tonic, emmenagogue; amenorrhea, menorrhagia, piles, leucorrhea, colic, relaxed throat, sore nipples, intermittents; infusion, expressed juice. Dose 3ss-1 (2-4 Gm.); oil, mv-15 (.3-1cc.).