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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Lamiales

Familia: Tetrachondraceae
Genus: Polypremum
Species: P. procumbens

Polypremum L., Sp. Pl. 1: 111. (1753)

monotypic taxon


Cleyera Adans. vide Cleyera Thunb., Nov. Gen. Pl. [Thunberg] 3: 68. (1783) nom. cons. (Pentaphylacaceae)
Hasslerella Chodat
Symphoranthus Mitch.


Linnaeus, C. 1753. Species Plantarum 1: 111.
Govaerts, R. et al. 2021. Polypremum in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 June 18. Reference page.
Hassler, M. 2021. Polypremum. 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. 2021. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2021 June 18. Reference page.
International Plant Names Index. 2021. Polypremum. Published online. Accessed: June 19 2021. 2021. Polypremum. Missouri Botanical Garden. Published on the internet. Accessed: 2021 June 18.

Polypremum is a flowering plant genus in the family Tetrachondraceae.[1] The genus contains the single species Polypremum procumbens, commonly known as juniperleaf[2] or rustweed.[3] Polypremum has also been placed in the various families Buddlejaceae, Loganiaceae, Rubiaceae, and most recently in its own Polypremaceae.[4][5]

P. procumbens is a perennial or annual forb/herb, and grows low with sometimes multiple ascending stems producing small white flowers that bloom in summer and fall. Leaves are opposite, 1–2.5 cm, narrow, and pointed at the end. The foliage turns a brownish red in autumn.[4]

P. procumbens is native to eastern USA excluding New England, south to Central America and the West Indies, with occurrences in South America. It has been introduced in the Pacific basin and Australia, often occurring along roads and airstrips. In its southeastern USA range it is common in coastal plain and piedmont regions, growing in disturbed areas, and rare in the mountains.[5][6]

USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN). National Germplasm Resources Laboratory, Beltsville, Maryland. (8 January 2013)
USDA-NRCS PLANTS Database: Polypremum procumbens L. - juniper leaf
Atlas of Florida Vascular Plants: Polypremum procumbens L. - rustweed
Richard K. Rabeler & Craig C. Freeman (2012) Flora of North America Provisional Publication: POLYPREMACEAE Takhtajan ex Reveal (Polypremum Family)
Weakley, Alan S. (November 2012). Flora of the Southern and Mid-Atlantic States (PDF). Chapel Hill, NC, USA: The University of North Carolina Herbarium. p. 898. Retrieved 26 September 2014.
Encyclopedia of Life (25 Sep 2014)

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