Invasive Alien Species

Species Name: Boerhavia erecta

Family Name:
Nyctaginaceae
Synonym:
Origin:
Tropical and sub-tropical America
Description:
Perennial, erect, branched herb, up to 100 cm tall, with strong taproot. Stem cylindrical, thickened at the nodes, green or purplish, commonly sticky. Leaves opposite in unequal pairs, ovate-oblong to ovate- lanceolate, petiolate, glandular, finely hairy, 10-40 x 5-25 mm (larger leaves), 5-30 x 4-20 mm (smaller leaves).  Inflorescence axillary and terminal panicles, or umbel-like, in head of 3-9 flowers; perianth constricted about the middle, green and persistent below, upper parts white to pink, 5-lobed, and falling at maturity. Fruit thin walled, ribbed, becoming sticky when we, 4 mm long, containing a single, club-shaped, longitudinally-ribbed seed
Invaded Habitat:
Disturbed forests, grasslands, pastures, road-sides, along rail roads, gardens, cultivated lands, upland rice fields

Distribution:
Throughout Indonesia except Kalimantan, as far as known
Ecology:
Open, sunny places from 0from the coast up to 700 m altitude. The sticky fruit are easily dispersed by animals, including birds and humans
References:
  1. Backer , C. A. & R. C. Bakhuizen Van Den Brink.  1963.  Flora of Java.  Vol. I. N.V. P. Noordhoff. Groningen, Netherlands.
  2. Soerjani, M.,  A. J. G. H. Kostermans & Gembong Tjitrosoepomo (Eds.).  1987.  Weeds of Rice in Indonesia. Balai Pustaka. Jakarta.
  3. 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).
  4. Waterhouse, B.M. & A.A. Mitchell.  1998.  Northern Australia Quarantine Strategy.  Weeds Target List.  Miscellaneous Publication 6/98.