*Polycarpon tetraphyllum

Family Caryophyllaceae

Fourleaf Allseed

Small annual herb with opposite leaves.

Flowers: White, small, September – November.

Fruit: Capsule less than 3 mm long with about 15 seeds, September – December.


Gallery images: seed, seedling, rootstock, resprout


  • Native of Europe.
  • Common weed of disturbed areas and gardens.
  • Occasional minor weed at the Australian Botanic Garden.
  • Probably killed by fire.

Asterisk * indicates exotic species naturalised at the Australian Botanic Garden.

Ecology of Cumberland Plain Woodland

Polycarpon tetraphyllum plant 

Polycarpon tetraphyllum flower