Borreria latifolia (Aubl.) K.Schum
If you often walk along rice field embankments, gardens, or vacant lots in East Java, you’ve definitely seen this plant. Its small purple flowers cluster at the tip of the stem, growing among tall grass. Its name is Borreria latifolia, but people usually call it broadleaf buttonweed or rumput kancing in Indonesian. Taxonomy & Identity • Scientific name: Borreria latifolia (Aubl.) K.Schum. • Family: Rubiaceae - same family as coffee and noni • Local names: Broadleaf buttonweed, rumput kancing, rumput setawar • Origin: Central and South America, now naturalized across tropical Asia Morphology to Help You ID It • Stem: Erect or slightly trailing, square-shaped, 15-60 cm tall, with fine hairs • Leaves: Simple, opposite, elliptical to oval. Pointed tips, rough surface. Size 2-7 cm • Flowers: Compound, forming dense heads at stem tips and leaf axils. Color ranges from white to pale purple, tiny but packed tightly • Fruit: Small capsule that splits open, spreading seeds everyw...