Sida rhombifolia

This plant is a perennial herb or subshrub native to tropical and subtropical parts of Africa, Asia, and the western Pacific. Its solitary flowers have five pale yellow petals and a central cluster of yellow stamens; some flowers have reddish markings at the petal bases. The toothed leaves narrow toward their bases. In Colombia, it occurs from sea level to about 5,900 feet. It is invasive in the Northern Territory of Australia, where it colonizes disturbed and overgrazed ground. Seeds spread on animals, vehicles and machinery, as well as in contaminated grain. Photographed in the department of Quindio, Colombia.