Botany Biology Phenology Ecology Distribution Agricultural importance Chemical control
| Description : | Terrestrial, annual or perennial, erect herb, up to 150 cm tall. Taproot white ore brown. Stem rounded or angular, solid, glabrous, hairy. Stipules present, triangular, glabrous. Leaves simple, alternate spiral, stalked, more than 2 cm long/wide, hairy on both sides, margin entire, apex attenuate or acute, base acute or attenuate, pinnately veined. Flowers bisexual, solitary, axillary, petals 4, yellow. Fruit a capsule, indehiscent or splitting in irregular pieces. |