Common Name : Tiny false buttonweed Family : Rubiaceae Habit: Annual herb, 5-20 cm tall. Stem: Mostly unbranched, quadrangular, angles scabrid. Leaves: Opposite and verticillate, 2-5 x 0.5-0.7 cm linear or narrowly elliptic, more or less sessile, acute and attenuate, margin and midrib beneath scabrid, with 2-3 pairs of lateral nerves. Flowers: Inflorescence axillary with dense globose heads, 5-10 mm in diameter; flowers white. Fruits: Capsule 2-2.5 mm long, narrowed at base, pubescent above, glabrous below. Seeds: Polished, shining, 1.75-2 x 0.7 mm.