Polycarpon tetraphyllum

Polycarpon tetraphyllum, commonly known as four-leaved allseed (also fourleaf allseed or fourleaf manyseed), is a plant of the family Caryophyllaceae. 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.

Polycarpon tetraphyllum
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Caryophyllaceae
Genus: Polycarpon
Species:
P. tetraphyllum
Binomial name
Polycarpon tetraphyllum
Synonyms[1]
List
    • Alsine polycarpa Crantz
    • Alsine succulenta Delile
    • Arenaria succulenta Ser.
    • Arversia loeflingiae (Wall. ex Wight & Arn.) Walp.
    • Hapalosia loeflingiae Wall. ex Wight & Arn.
    • Herniaria alsinifolia (L.) Mill.
    • Holosteum tetraphyllum (L.) Thunb.
    • Illecebrum alsinifolium Comm. ex Poir.
    • Illecebrum alsinifolium L.
    • Illecebrum frutescens Comm. ex Schult.
    • Illecebrum striatum Pers.
    • Lahaya memphitica Schult.
    • Loeflingia caspica S.G.Gmel.
    • Loeflingia indica Retz.
    • Mollugo tetraphylla L.
    • Paronychia alsinifolia (L.) Juss.
    • Paronychia striata DC.
    • Polycarpaea alsinifolia (L.) C.Mohr
    • Polycarpaea benthamii Wall.
    • Polycarpaea depressa DC.
    • Polycarpaea lanuginosa Wall.
    • Polycarpaea tetraphylla (L.) E.H.L.Krause
    • Polycarpon benthamii Hook.f. & Edgew.
    • Polycarpon brachypetalum Gagnep.
    • Polycarpon depressum Edgew. & Hook.f.
    • Polycarpon diphyllum Cav.
    • Polycarpon dunense P.Fraga & Rosselló
    • Polycarpon floribundum Willk.
    • Polycarpon indicum (Retz.) Merr.
    • Polycarpon lanuginosum Edgew. & Hook.f.
    • Polycarpon loeflingiae (Wall. ex Wight & Arn.) Benth. & Hook.f.
    • Polycarpon loeflingiae var. genuinum Briq.
    • Polycarpon polyphyllum Blanco
    • Polycarpon sauvagei Mathez
    • Polycarpon succulentum Webb & Berthel.
    • Polycarpon tetraphyllum f. depauperatum (Merino) Amich
    • Polycarpon tetraphyllum f. ovalifolium (Merino) Amich
    • Polycarpon tetraphyllum var. diphyllum (Cav.) Romo
    • Polycarpon tetraphyllum var. fontqueri O.Bolòs & Vigo
    • Spergula succulenta D.Dietr.
    • Spergularia succulenta (Delile) G.Don

Description

Polycarpon tetraphyllum is a prostrate, herbaceous, annual plant. The stems produce many branches, and leaves are obovate and glabrous.[2][3]

The inflorescence consists of loose clusters of many small flowers at the end of each stem. The seeds are rounded and 0.4 - 0.5 mm long.[2][3]

Distribution and habitat

Polycarpon tetraphyllum is native to Southern Europe, the British Isles, the Mediterranean region, the middle east, and the Indian subcontinent. It has been introduced to the Americas, Australia, New Zealand, and Southeast Asia.[4]

The plant tends to grow in disturbed, shady areas. It is commonly found as a weed growing in crevices in roads, gardens, and fields.[2][3][5]

References
  1. "Polycarpon tetraphyllum (L.) L." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 14 March 2022.
  2. "Polycarpon tetraphyllum var. tetraphyllum". ucjeps.berkeley.edu. Retrieved 2021-08-04.
  3. "Factsheet - Polycarpon tetraphyllum". www.iewf.org. Retrieved 2021-08-04.
  4. "Polycarpon tetraphyllum (L.) L. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2021-08-04.
  5. "PlantNET - FloraOnline". plantnet.rbgsyd.nsw.gov.au. Retrieved 2021-08-04.
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