Invasive Alien Species
Species Name: Turnera ulmifolia
- Family Name:
- Turnera angustifolia Mill.
- West Indies, already very long ago introduced into other warm countries
- Perennial herb, often woody at the base, with a strong tap root, 40-150 cm tall. Stem usually leafy only at the upper part. Leaf petiole up to 2 cm long, blade lanceolate or ovate-lanceolate, margin dentate,4-12 x 1-3 cm, leaving a knoblike scar. Inflorescence terminal, pedicel 3-5 mm long; bracteoles lanceolate, pinnately nerved, serrate, with 2 large marginal glands, 1-3.5 cm x 2.5-6 mm; calyx 2-2.5 cm high; petals yellow, with dentate truncate top, not overlapping at the base, corolla almost flatly expanded; flowers expand at about 5 in the morning and wither vat 11 a.m. before noon. Fruit capsule ovoid, rather thick walled, 9-10 mm; seeds more than 30, brown, aril white.
- Invaded Habitat:
- Coastal localities, grassy fields, road sides, under coconuts, often on sandy soils
- Sumatra, Java, Madura, Kalimantan as far as known
- Sunny to dry localities especially in the coastal regions up to 750 m altitude
- Backer , C. A. & R. C. Bakhuizen Van Den Brink. 1963. Flora of Java. Vol. I. N.V. P. Noordhoff. Groningen, Netherlands.
- 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)