Polycarpon

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Caryophyllales

Familia: Caryophyllaceae
Tribe: Polycarpeae
Genus: Polycarpon
Species (sensu Kool et al., 2007): P. tetraphyllum

Species (sensu Hassler et al., 2019): P. alsinifolium – P. apurense – P. moreiranum – P. succulentum – P. tetraphyllum – P. urbanianum
Name

Polycarpon Loefl. ex L. Syst. Nat. (ed. 10) 2: 881, 859, 1360. (1759)

monotypic taxon

Note: However, some combinations are retained in this genus by some authorities until formal reclassifications have been completed - see Hassler (2017) for work outstanding.
References

Löfling, P. 1759. Systema Naturae, Editio Decima 2: 881, 859, 1360.
Hassler, M. 2017. Polycarpon. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2017. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2017 May 22. Reference page.
Hernández-Ledesma, P., Berendsohn, W. G., Borsch, T., Mering, S. v., Akhani, H., Arias, S., Castañeda-Noa, I., Eggli, U., Eriksson, R., Flores-Olvera, H., Fuentes-Bazán, S., Kadereit, G., Klak, C., Korotkova, N., Nyffeler R., Ocampo G., Ochoterena, H., Oxelman, B., Rabeler, R. K., Sanchez, A., Schlumpberger, B. O. & Uotila, P. 2015. A taxonomic backbone for the global synthesis of species diversity in the angiosperm order Caryophyllales. Willdenowia 45(3): 281–383. DOI: 10.3372/wi.45.45301 Open access Reference page.
Iamonico, D. 2015. A new combination and change in rank in Polycarpon (Caryophyllaceae), Endemic to California, USA, and Mexico. Novon 24(2): 159-164. DOI: 10.3417/2014018
Iamonico, D. 2015. Augustea (Polycarpaeae, Caryophyllaceae), a new genus from South America. Phytotaxa 236(1): 71-78. DOI: 10.11646/phytotaxa.236.1.6
Iamonico, D. 2015. A new nomenclatural change in Polycarpon (Caryophyllaceae): P. tetraphyllum subsp. sauvagei comb. & stat. nov., an endemic taxon from Morocco. Phytotaxa 197(3): 225-226. {doi|10.11646/phytotaxa.197.3.7}}
Iamonico, D. & Domina, G. 2015. Nomenclatural notes on the Polycarpon tetraphyllum aggregate (Caryophyllaceae). Plant Biosystems-An International Journal Dealing with all Aspects of Plant Biology 149(4): 720-727. DOI: 10.1080/11263504.2015.1057260
International Plant Names Index. 2017. Polycarpon. Published online. Accessed: May 22 2017.
Kool, A., Bengtson, A. & Thulin, M. 2007. Polyphyly of Polycarpon (Caryophyllaceae) inferred from DNA sequence data. Taxon 56(3): 775-782. Full text PDF from ResearchGate Reference page.
Tropicos.org 2017. Polycarpon. Missouri Botanical Garden. Published online. Accessed: 30 May 2017.

Vernacular names
English: Manyseeds

Polycarpon is a genus of flowering plants in the family Caryophyllaceae. They are known generally as manyseeds. There are roughly 9 to 15 species, representing most continents.[1] 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. These plants are low, matted annuals spreading slender stems along the ground or erect with many branches.
Selected species

Polycarpon depressum - California manyseed
Polycarpon polycarpoides
Polycarpon prostratum
Polycarpon succulentum
Polycarpon tetraphyllum - fourleaf manyseed

References

Flora of North America