Are Mertensia and Centranthus types of flowering plants?
Centranthus Centranthus is a flowering plant genus comprising herbs and subshrubs native to Southern Europe. It is in the Caprifoliaceae family. There are about twelve species in the genus. Some "Centranthus" are known as introduced species in other parts of the world, including "Centranthus ruber" in the western United States and "Centranthus macrosiphon" in Western Australia.
Malcolmia maritima Malcolmia maritima, Virginia stock is a popular annual garden plant from the family Brassicaceae. A beautiful and profusely flowering annual, it is probably one of the easiest of all plants to grow. Growing to about 6 - tall, it makes a mass of pink, purple and white fragrant four petalled (cruciform) flowers. It is native in Greece and Albania and may be naturalized elsewhere in Mediterranean Europe where it occurs in maritime sandy habitats and in waste places.