Invasive Alien Species

Species Name: Rivina humilis

Family Name:
Phytolaccaceae
Synonym:
Origin:
America
Description:
Erect, sometimes woody at the base,  40-100 cm tall. Leaves ovate-oblong, from very obtuse, rounded or sub-cordate base, long acuminate, acute, on midrib beneath, 4-12 cm x 1.5 -4 cm; petiole 1-3 cm. Flower racemes erect, 4-10 cm, sparingly patently short-hairy; bracts small,  during anthesis 2-3 mm, afterwards 3-4 mm; tepals during anthesis white or suffused with pink, 2-2.5 mm long. Fruit berry,  bright red, 4 mm diam.  Seeds patently shortly pubescent.
Invaded Habitat:
Hedgerows, foot of brick walls, waste places, thickets, kampong border  and oil palm plantations.
Distribution:
Known in Java since 1858) as ornamental plant and naturalized. Recently in North Sumatra is an important weed in oil palm plantations.
Ecology:
Slightly shaded localities. In Java at 1-1450 m altitude.
References:
  1. Backer , C. A. & R. C. Bakhuizen Van Den Brink.  1963.  Flora of Java. N.V. P. Noordhoff. Groningen, Netherlands. Vol. I.
  2. Tjitrosoedirdjo, Sri S. 2004. Potensi Rivina humilis (Phytolaccaceae) sebagai Gulma Baru di Sumatera Utara. Prosiding Konferensi Himpunan Ilmu Gulma Indonesia, Bogor, 15-17 Juli 2003 (in Indonesian)