Cassipourea is a genus of flowering plants in the family Rhizophoraceae.
 There are about 40 species.
 The genus is divided into several subgenera, based mainly on the structure of the flowers.
Mitella is a genus of flowering plants known as miterworts or bishop's caps.
 "Mitella" species are native to temperate and arctic North America and Asia.

Question: Are Cassipourea and Mitella both flowering plants?
Answer: yes