Herbs 10-40 cm, much branched, pilose or subglabrous. Leaves in pseudowhorls of 3-6 or opposite; leaf blade spatulate-oblanceolate or elliptic, 1-2.5 cm × 3-6 mm, base attenuate, margin with sparse teeth, apex obtuse or acute. Pedicel 5-14(-18) mm, slender. Flowers usually 2-7 in a cyme. Tepals greenish white, yellowish, or milky-colored, oblong, 3-4 mm, margin membranous, 3-veined. Stamens 3-5. Styles 3(or 4). Capsule ellipsoid, slightly shorter than persistent tepals, 3- or 4-valved. Seeds chestnut-brown, subreniform, granulose; strophiole ca. 1/5 as long as seed, claviform. Fl. and fr. almost year-round. 2n = 36.
Sepals 5, free; staminodes 0–4, bifid; stamens 4–10.
Leaves opposite or apparently verticillate, petiolate, 10–51 mm. long (including petiole of 0–5 mm.), 4–12.5 mm. broad, the blade narrowly elliptic, oblanceolate-elliptic, oblanceolate-oblong or oblong-ovate, plane, entire or denticulate, subacute or acute and obscurely apiculate at apex.
Flowers inconspicuous, greenish or pinkish white, in rather lax fascicles at the nodes, 1–15 per node, the pedicels 4.5–18.5 mm. long.
An upright, spreading or prostrate very nearly glabrous diffuse subsucculent herb; branches 5–80 cm. long.
Fruiting calyx 1.5–2.5 mm. broad, 3.5–5 mm. long.
Leaves opposite or in whorls of 4–6, unequal; laminas 5–40 × 2–18 mm., lanceolate, obovate, spathulate, elliptic-oblong to almost orbicular, entire or obscurely serrulate in upper 1/2; apex usually acute, often mucronate; base cuneate, gradually narrowed into a short pedicel; young leaves with a few hairs on midrib, glabrescent, sometimes with many appressed woolly crisped white hairs in axils and on lamina.
Ovary of 3 united carpels; stigmas 3.
Flowers small, whitish or cream, in groups of 1–? at nodes, on pedicels 2–14 mm. long.
Seeds dark brown with rows of small tubercles; aril less than 1/3 the length of the seed.
Decumbent or prostrate creeping herb, glabrous or with appressed hairs especially on youngest parts or in axils, with many stems up to 50 cm. long.
Perianth-segments 5, up to 5 mm. long, free, persistently surrounding the fruit.
Glabrous or with a few appressed hairs on the youngest parts. Stems up to 50 cm long, with internodes 1-3 cm long. Leaves opposite or in whorls of 4-6, unequal, obovate to elliptical-oblong, 1-3 cm long, 0.4-1 cm wide, acute and often mucronate at the tip, at the base gradually narrowed to a short petiole, the edges entire or obscurely serrulate in the upper half. Young leaves with a few hairs on the midrib below, the older glabrous. Flowers in groups of 3-6, on pedicels 4-8 mm long. Perianth segments 3-5 mm long, green with a brown streak outside, white or pinkish inside, the outer flat, the inner cucullate and slightly keeled. Stamens 3-5, occasionally 10. Staminodes wanting. Stigmas 3. Seeds dark brown, with small tubercles in lines, the aril less than a third the length of the seed.