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Herbs annual or perennial, glabrous. Stems diffuse, decumbent, or erect, branched or not, sometimes absent. Leaves in a basal rosette, pseudoverticillate, opposite, or whorled, ± sessile, margin entire. Inflorescences terminal or seemingly leaf-opposed cymes or umbels. Flowers pedicellate. Tepals 5, rarely 4, free, herbaceous, often with transparent scarious margins. Stamens usually 3(-5), rarely more (6-10). Carpels 3(-5), connate; ovary superior, ovoid or ellipsoid, 3(-5)-loculed, each locule with many ovules on axile placenta. Styles 3(-5), linear. Capsule globose, membranous, 3(-5)-valved, loculicidal, with persistent tepals. Seeds numerous, reniform or D-shaped, smooth, sculptured, or raphe ribbed, without filiform arils or caruncles; embryo annular.
Erect or diffuse, slender, glabrous herbs, mostly annual. Leaves spuriously verti-cillate or partly subopposite, lanceolate, linear-lanceolate or for a greater or smaller part obovate-subspathulate, entire. Flowers small, in terminal cymes which often end in pseudoracemes or in stalked umbels; single flowers pedicelled. Tepals her-baceous, with scarious, often white margins. Stamens 3-5, alternating with the tepals, less often 6-10, free; filaments filiform, rarely (not in Malaysia) dilated in the middle. Ovary ovoid or broadly ellipsoid, 3-celled. Styles 3, filiform. Fruit, when falling off, leaving the persistent pedicel. Seeds estrophiolate; testa granulate or faintly reticulate; embryo annular.
Herbs, annual [perennial], glabrous. Stems prostrate to erect, branching from base. Leaves whorled, opposite, or alternate; basal leaves usually largest, cauline leaves gradually reduced distally; stipules absent or rudimentary. Inflorescences axillary or terminal, reduced umbellate or cymose. Flowers pedicellate; sepals persistent, 5, distinct, not stellate-pubescent; petals absent; stamens 3-5, alternate with the sepals or carpels, basally connate by a small hypogynous ring; pistils 3-5-locular; ovules 5-15 per locule; styles 3-5, distinct. Fruits capsular, 3-valved. Seeds: flattened laterally, reniform, smooth or reticulate to ribbed, strophioles absent. x = 9.
Erect or procumbent annual herbs. Leaves verticillate or sometimes opposite, linear, oblanceolate, obovate or spathulate, glabrous, entire, the radical often forming a basal rosette, the cauline sometimes lacking. Stipules small or absent, often caducous. Inflorescences cymose, laxly dichasial or umbelliform. Flowers hermaphrodite, greenish, inconspicuous. Sepals 5, free. Stamens 3–5, rarely 6–10, hypogynous, free. Ovary superior, of 3–5 united carpels, 3–5-locular; ovules axile, many per loculus. Fruit a loculicidal capsule. Seeds many, estrophiolate.
Herbs, annual or perennial, or small shrubs or subshrubs, rarely dioecious (not in Australia), glabrous or with indumentum of glandular hairs. Leaves in false whorls; stipules absent. Flowers in seemingly axillary, sessile or pedunculate, umbel-or raceme-like cymes, or flowers solitary; bracts small, membranous or partly herbaceous. Tepals 5, free. Stamens 3–9. Ovary of 3 carpels, with few to numerous ovules; styles 3. Capsule dehiscent with 3 valves. Seeds 3 to numerous, smooth to tuberculate or with curved parallel ridges.
Herbaceous or suffruticose plants, glabrous throughout. Leaves simple, basal or pseudoverticellate, generally linear; stipules deciduous. Inflorescences axillary, cymose. Flowers bisexual, pedicellate. Perianth 5-parted, distinct to the base, imbricate, scarious at the margins, lacking appendages. Stamens 3-10, united at the base. Ovary superior, 3-to 5-loculate, the ovules campylotropous, numerous on the axile placenta. Capsule loculicidal; seeds generally numerous, small, estrophiolate.
Fls perfect; sep 5, distinct; stamens 3–10; ovary superior, 3–5-locular; styles 3–5; ovules many; fr a thin-walled loculicidal capsule; seeds without an aril; herbs with opposite or whorled lvs and pedicellate, axillary, white or greenish fls. 20, warm reg.
Leaves basal or in whorls on stem, linear, oblanceolate, obovate or spathulate, glabrous, entire, the radical ones often rosulate, the cauline sometimes lacking; stipules small or absent, often caducous.
Ovary superior, of 3–5 united carpels, 3–5-locular; ovules many per locule; placentation axile.
Seeds many, compressed, triangular or ovate, estrophiolate.
Flowers hermaphrodite, greenish or whitish, inconspicuous.
Inflorescences cymose, laxly dichasial or umbelliform.
Stamens 3–5, rarely more, hypogynous, free.
Erect or procumbent annual herbs.
Fruit a loculicidal capsule.
Perianth-segments 5, free.
