Annual or perennial, prostrate, ascending or erect herb to 1 m, sometimes with a thick taproot; stems fleshy, becomming woody towards the base, branching mainly from the base. see more in the book
Ecologie :
Disturbed ground in cultivations, waste places and grassland and along paths and dry stream beds; often on sandy soil; 0- 1800 m alt. Pantropical weed.