Invasive Alien Species

Species Name: Pilea microphylla

Family Name:
South America
Delicate herb. Stem succulent, slender, angular, creeping and rooting at the base, often much branch, 4-12 cm long, densely leafy.  Leaves sub-elliptic,  one of each pair distinctly smaller and on a much shorter petiole; larger one distichous, 3-6 x 1-2 mm, smaller one  1-2.5  x 0.5-1 mm. Inflorescence dense, axillary cymes; flowers uni-sexual, in small congested, sub-capitate, nearly sessile, the individual flowers greenish or tinged with red, less than 1 mm long. Fruit small, ovate.
Invaded Habitat:
Hard or stony places, old walls, dams, gardens, drains, roads, and  pathways.
It has been naturalized in Java since long time ago.
Found at 3-1425 m alt.
  1. Backer , C. A. & R. C. Bakhuizen Van Den Brink.  1965.  Flora of Java. Vol. II.  N.V. P. Noordhoff. Groningen, Netherlands.
  2. Pancho, J.V. and S.R. Obien. 1983. Manual of Weeds of Tobacco Farms in the Philippines. Philippine Tobacco Research and Training Center, Mariano Marcos State University, Batac, Ilocos Norte, The Philippines.
  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)