Polycarpon

{{Short description|Genus of flowering plants}}

{{Automatic taxobox

|image = Starr 080415-4001 Polycarpon tetraphyllum.jpg

|image_caption = Polycarpon tetraphyllum

|taxon = Polycarpon

|authority = Loefl. (1759)

|subdivision_ranks = Species

|subdivision = See text

|synonyms =

• Arversia {{small|Cambess. (1830)}}
• Hapalosia {{small|Wall. ex Wight & Arn. (1834)}}

|synonyms_ref = [https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:116141-3 Polycarpon Loefl.] Plants of the World Online. Retrieved 22 March 2024.

}}

Polycarpon is a genus of flowering plants in the family Caryophyllaceae. They are known generally as manyseeds. There are seven species distributed in temperate and tropical regions around the world, including western North America, South America, Europe, Africa, and West, South, and Southeast Asia.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=126356 Flora of North America] These plants are low, matted annuals spreading slender stems along the ground or erect with many branches. The best-known species is perhaps Polycarpon tetraphyllum, which is native to southern Europe but is present in many other regions as an introduced species.