Chilillo, Chili de perro Slender herb, to 70 cm tall, nearly glabrous. Leaves, ocreae, and tepals conspicuously dark-punctate; petioles less than 5 mm long; blades linear-lanceolate, acuminate at apex, narrowly decurrent on petiole at base, 2-10 cm long, 0.5-2 cm wide, glabrous but minutely ciliate and sometimes with the midrib near base sparsely strigose; ocreae 5-15 mm long, with strigose cilia at apex usually 7-10 mm long. Inflorescences terminal, spikelike racemes or panicles of few branches; flowers interrupted along rachis, fasciculate, white or greenish, subtended by ciliate ocreolae 2-3 mm long; pedicels exceeding ocreolae 1-2 mm, articulate at apex; tepals 5, ovate, 3-4 mm long; stamens usually 8, 1.5-2 mm long; ovary trigonous; styles 3, ca 1 mm long. Achenes trigonous, 2.5-4 mm long, brown to black, somewhat beaked. Croat 5247. Rare, in marshy places, especially sandbars. Flowers throughout the year, possibly with a peak in the late rainy and early dry seasons.