Polycarpon tetraphyllum

Taxobox
name = Four-leaved Allseed

---

regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Caryophyllales
familia = Caryophyllaceae
genus = "Polycarpon"
species = "P. tetraphyllum "
binomial = "Polycarpon tetraphyllum"
binomial_authority = (L., 1759)

"Polycarpon tetraphyllum", commonly known as Four-leaved Allseed (also Fourleaf Allseed or Fourleaf Manyseed), is a plant of the family Caryophyllaceae (pinks). An annual herb growing to 15 cm in height, it is found on sandy soils, in coastal areas and on wasteland. Native to Europe, it is also naturalised in parts of North America, Australia and elsewhere. It is rare in Britain, except in the Scilly Isles.