Stems glabrous or strigillose in the upper part, non-glandular. Lower leaves variously and irregularly dentate, mid-stem leaves 1- or 2-pinnatifid or incised but not nearly to midrib, lobes to 25 mm long, strigillose, acute. Inflorescence not glandular or viscid, pubescent to puberulous. Flowers crowded along rachis or distant in lower part; sessile; bracts broad-lanceolate, puberulous abaxially, glabrous after anthesis, c. half as long as calyx. Calyx hirsute-strigillose outside, glabrous inside. Corolla-tube with hispid hairs outside, cylindric. Flowers Nov.–Mar.
MuM, VVP, VRiv, MSB, RobP, MuF, HSF. Also naturalised SA, Qld, NSW. Native to North America. Weedy in riverine woodland, along watercourses, and disturbed sites of roadsides and besides tracks in northern Victoria mostly along the Murray River and in the Yarra Valley.
