(Polycarpon tetraphyllum diphyllum)
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.