Billygoat-weed, Chick weed, Goatweed, Whiteweed

Description:

Herb 0.5–1 m. high, with ovate leaves 2–6 cm long, and flowers are white to mauve

Habitat:

A. conyzoides is prone to becoming a rampant environmental weed when grown outside of its natural range. It is an invasive weed in Africa, Australia, Southeast Asia and USA.[7][8] It is considered a moderate weed of rice cultivation in Asia.[9]

Notes:

Ingesting A. conyzoides can cause liver lesions and tumors. There was a mass poisoning incident in Ethiopia as a result of contamination of grain with A. conyzoides. The plant contains the pyrrolizidine alkaloids lycopsamine and echinatine. In the second photograph a bug is on the flower.