Jacq., Coll. 3:247. 1789
Herb, 20-150 cm tall; stems hollow. Leaves opposite; stipules minute, bristly-ciliate; petioles 1-8 cm long, bearing a tuft of fine trichomes at apex; blades deltoid-ovate or ovate, acuminate, truncate to cordate at base, 2.5-9 (14) cm long, 2-6 (14) cm wide, dentate-crenate, sparsely setose-pubescent on veins, paler below. Umbels simple, axillary; peduncles 1-14 cm long, finely pubescent especially near apex; pedicels slender, 7-10 mm long; flowers 5-parted, minute, white; calyx ca 1 mm long, with apiculate teeth; petals obovate, ca 2 mm long; stamens to 1.5 mm long; anthers ca 0.4 mm long, 0.5 mm wide; styles 2, to 1 mm long; stigma simple. Fruits ovoid, 2-4 mm long, ca 2 mm wide. Aviles 18.
Collected once on the island; probably no longer occurring there. Seasonal behavior not determined. Flowers and fruits most abundantly in the rainy season.
Throughout warmer regions of the New World. In Panama, known only from tropical moist forest in the Canal Zone.