Achillea millefolium
L. MilfoilErect herb to c. 1 m high, unbranched above base; stems terete, striate, pubescent. Leaves sessile, oblanceolate to narrow-elliptic in outline, 1- or 2-pinnatisect, usually 2–10 cm long and 8–25 mm wide, pubescent to glabrescent; rachis c. 1 mm wide, not winged, lobed or toothed between primary pinnae; primary pinnae usually more than 15 per leaf, ovate to lanceolate, mostly 5–20 mm long; ultimate lobes spreading in more than one plane. Capitula in dense compound corymbs, 4–6 mm diam.; involucral bracts oblong, 1–5 mm long, pubescent, margins dark and scarious. Ray florets c. 5; ligules c. 2.5 mm long, white, pink or mauve. Disc florets c. 2 mm long, white or cream. Cypselas to 3 mm long. Flowers Oct.–Apr.
MuM, VVP, VRiv, MuF, GipP, OtP, WaP, CVU, DunT, NIS, HSF, HNF, OtR, Strz, MonT, VAlp. Naturalised all States except NT. Native to Europe. A widespread weed of disturbed areas such as roadsides and wasteland, but also established in native grassland and woodlands, particularly in subalpine areas.
See note after Achillea distans subsp. tanacetifolia.
Jeanes, J.A. (1999). Asteraceae. In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 4, Cornaceae to Asteraceae, pp. 652–666. Inkata Press, Melbourne.