Ageratum conyzoides (PROSEA)
- Protologue: Sp. pl. 2: 839 (1753).
- Goatweed (En). Eupatoire bleue (Fr)
- Indonesia: babadotan (Sundanese), wedusan (Javanese), dus-bedusan (Madurese)
- Malaysia: tahi anjing, rumput pereh jarang, rumput sekedok (Peninsular)
- Philippines: bulak-manok (Tagalog), singilan (Iloko), bahug-bahug (Panay Bisaya)
- Thailand: thiam mae haang (Loei), saapraeng saapkaa (Chiang Mai), ya saap raeng (Ratchaburi)
- Vietnam: cây bông cứt heo, cây hoa cứt lợn, cây bông thúi.
Originating from Central and South America, but now a pantropical weed that is very common throughout India, Burma (Myanmar), Indo-China, southern China, Thailand and Malesia.
The most widespread medicinal uses are externally to heal wounds and to treat skin diseases, and internally to treat diarrhoea, as a febrifuge and as an anti-allergenic agent. The plant yields an insecticide. It is sometimes planted as a ground cover in plantations, e.g. of rubber and citrus.
An annual erect herb, at the base sometimes decumbent and rooting, up to 120(-150) cm tall, stems with rather long hairs on the nodes and younger parts; leaves ovate, triangular-ovate or rhomboid-ovate, (0.5-)1-10 cm × 0.5-7 cm, with obtuse or rounded base; head 4-6 mm long, 60-75-flowered, outermost involucral bracts beset with only simple eglandular hairs, inner involucral bracts with abruptly contracted apex; corolla 1-2.5 mm long; fruit glabrous or very sparingly hairy. A. conyzoides is very common in fields, roadsides and waste places up to 2500 m altitude.
18, 96, 156, 202, 332, 350, 383, 495,496, 549, 580, 597, 614, 616, 685, 713, 876, 928, 929, 996, 1034, 1035, 1090, 1126, 1131, 1178, 1246, 1268, 1294, 1324, 1386, 1408, 1517, 1570, 1593, 1659.
Slamet Sutanti Budi Rahayu, Rina Ratnasih Irwanto & L.J.G. van der Maesen