Are  Platystemon and Apera part of the same genus?
Platystemon: Platystemon is a monotypic genus of flowering plants in the poppy family containing the single species Platystemon californicus, which is known by the common name creamcups. Platystemon:  It is native to Oregon, California, Arizona, Utah and Baja California, and is found in open grasslands and sandy soils.
i don't know