Callirhoe and Dischidia are both genus of plants and one is known as poppy mallows, which?
Dischidia Dischidia is a genus of plants in the Milkweed family, Apocynaceae. They are epiphytes native to tropical areas of China, India and most areas of Indo-China. "Dischidia" are closely aligned with the sister genus "Hoya". Unlike "Hoya", the genus "Dischidia" is poorly known and has not been studied as closely.
Parthenium hysterophorus Parthenium hysterophorus is a species of flowering plant in the aster family, Asteraceae. It is native to the American tropics. Common names include Santa-Maria, Santa Maria feverfew, whitetop weed, famine weed, and congress weed. In India, it is locally known as carrot grass, congress grass or Gajar Ghans. It is a common invasive species in India, Australia, and parts of Africa.