Invasive Alien Species
Species Name: Erechtites valerianifolia
- Family Name:
- Senecio valerianifolius Wolf
- Brazil, introduce in Java in 1845
- Erect robust annual herb, up to 200 cm tall. Stem stout, ribbed with small prop-roots, petiole 0.5-4 cm long, higher ones sub-sessile, leaves alternate, deeply dissected, foetid –smelling. Inflorescence terminal, often large panicle; involucral bract 1-seriate, united almost to the tips, green 8-10 mm long; corolla yellowish, with a reddish violet, in the ray flowers 7 mm long, in the disk flowers 9 mm long. Achenes 3 mm long, brown, with patent white hairs.
This species in some literature and leaflets in Indonesia is confused with Crassocephalum crepidioides.
- Invaded Habitat:
- Road sides, waste places,agricultural fields, tea, coffee and rubber plantations, edge of the forest.
- Java, Sulawesi as far as known.
- Occurs at 100-2 000 m altitude at sunny localities, volcanic soils, recent clearings.
- Backer , C. A. & R. C. Bakhuizen Van Den Brink. 1965. Flora of Java. N.V. P. Noordhoff. Groningen, Netherlands
- Henty, E.E. & G.H. Pritchard. 1973. Weed of New Guinea and Their Control. Botany Bulletin No. 7. Division of Botany Department of Forests, Lae, Papua New Guinea
- Voogd, C.N.A. de. 1950. Tanaman Apakah Ini Gerangan. Buku kecil untuk taman berkelana. N.V. Uitgeverij W. van Hoeve, Bandung’s Gravenhage (translated by Soetan Sanif)