Polycarpon L.
General description:
Polycarpon L
Annual or perennial herbs, prostrate or ascending, dichotomously branched. Leaves opposite, appearing whorled. Stipules conspicuous, scarious. Inflorescence terminal, branched dichasial cyme. Flowers many, bisexual. Sepals 5, keeled and hooded, scarious on the margin. Petals 5, narrow, entire, white. Stamens 1-5; filaments more or less united at base. Ovary 1-locular, many ovuled. Capsule 3-valved; valves twisting spirally into tubes. Seeds ovoid, many.
Distribution:
Cosmopolitan genus with 16 species. 2 species in Saudi Arabia