English: Juniper leaf; Juniperleaf; Rustweed.
Clades:
Tetrachondraceae.
Genus monotypic.
Taxonomy: has also been placed in the Buddlejaceae,
Loganiaceae,
Rubiaceae, Polypremaceae.
Botany a perennial or annual herb; multiple ascending stems; leaves opposite, narrow, pointed tip, turning brownish red in autumn; flowers small, white, with 4 petals, blooming in summer and fall.
Region: eastern USA, south to Central America, West Indies, South America; introduced in the Pacific basin and Australia.
Habitat: along roads and airstrips, coastal plain, piedmont regions, disturbed areas.