Are Tabernaemontana and Caltha both genus of flowering plants ?
Tabernaemontana Tabernaemontana is a genus of flowering plants in the family Apocynaceae. It has a pan-tropical distribution, found in Asia, Africa, Australia, North America, South America, and a wide assortment of oceanic islands. These plants are shrubs and small trees growing to 1–15 m tall. The leaves are evergreen, opposite, 3–25 cm long, with milky sap; hence it is one of the diverse plant genera commonly called "milkwood". The flowers are fragrant, white, 1–5 cm in diameter.
Clusiella Clusiella is a plant genus of the family Calophyllaceae. When Planchon and Triana first published it in 1860, based on "Clusiella elegans", the genus was considered monotypic and remained as such for about 100 years.