Botany Biology Phenology Ecology Distribution Agricultural importance Cultural control
| Description : | Terrestrial, annual, erect or prostrate herb, up to 50 cm long. Roots fibrous, white or brown. Stems quadrangular, solid, glabrous, Stipules present, laciniate. Leaves simple, not lobed or divided, entire, opposite, stalked, linear, lanceolate, or elliptic, usually more than 2 cm long/wide, glabrous on both sides, margin entire, apex acute, base acute, one-veined,. Flowers bisexual, solitary or grouped together into an axillary cyme, sessile or stalked, petals 4, white. Fruits a capsule, opening with apical pores or slits. |