Ageratina adenophora (Spreng.) R. M. King & H. Rob., Phytologia 19:211. 1970
syn: Eupatorium adenophorum Spreng.; Ageratina trapezoidea (Kunth) R. M. King & H. Rob.; Eupatorium glandulosum Michx.; Eupatorium trapezoideum Kunth
Perennial coarse herb; leaves opposite, ovate-deltoid, up to 10 cm long, 4-7 cm broad with broadly cuneate or truncate base, sparsely pilose on both surfaces, 3-nerved, margins crenate, on 4-5 cm long petiole; Heads white 6-8 mm long, 5-6 mm across, in loose compound corymbs, receptacle glabrous,; achenes black, 1.5 mm long, 5-angular, glabrous; pappus of 8-10 bristles.
Native of Mexico, California and the West Indies, widely naturalised in tropical to subtropical areas. Photographed from Morni hills at about 1200 m on April 9, 2011.
Common names: catweed, Crofton weed, croftonweed, hemp-agrimony, Maui pamakani, Mexican-devil, sticky-agrimony
Dr. Gurcharan Singh
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.