Invasive Alien Species

Species Name: Spergula arvensis

Family Name:
Caryophyllaceae
Synonym:
Origin:
Europe, found for the first time in 1882 by Reinwardt in Tengger mountain, East Java. 
Description:
An erect or ascending annual  herb, usually branched near the base, 15-40 cm tall. Stem glabrous or glandular-hairy towards the apex, fetid; stipules triangular-ovate. Leaves in opposite clusters; blade thread-like, rounded above, channeled beneath, fleshy, glabrous or glandular-pubescent, 1-4.5 cm long. Inflorescence stalked, in terminal cymes, the stalk bend downwards after flowering; pedicels 6-25 mm long; sepals 5, ovate, sparsely glandular-hairy; petals 5, as long as or longer then the sepals, white; stamens 5-10; styles 5. Fruit a few to many-seeded capsule, opening with five valves. Seeds circular in outline or almost so, winged.
Invaded Habitat:
Fallow fields, gardens, roadsides, forest-edges, waste places, especially on loose soil.
Distribution:
Central and East Java as far as known. Of worldwide distribution in the tropics at higher altitude.
Ecology:
Occurs at 1 450-2 500 m altitude, becoming abundant above 1700 m.
References:
  1. Backer , C. A. & R. C. Bakhuizen Van Den Brink.  1965.  Flora of Java Vol. I.  N.V. P. Noordhoff. Groningen, Netherlands. 
  2. Everaarts, A.P. 1981. Weeds of vegetables in the highlands of Java. Lembaga Penelitian Hortikultura, Pasar Minggu, Jakarta.
  3. Moody, K., C.E. Munroe, R.T. Lubigan and E.C. Paller, Jr.  1984.  Major Weeds of the Philippines. Weed Science Society of the Philippines, UPLB College, Laguna, Philippines.