Portulaca oleracea
The species was first described by Nikolaus von Jacquin in 1763 as "Areca oleracea". The epithet "oleracea" means "vegetable- or herb-like", and is used in botanical Latin for edible or cultivated plants (as in "Brassica oleracea" or "Portulaca oleracea"). In 1838, Carl Friedrich Philipp von Martius transferred it to the genus "Oreodoxa" as "O. oleracea". Berthold Carl Seemann transferred it to the genus "Kentia" in 1838. In 1900 Orator F. Cook proposed a new genus for the royal palms, and moved this species from "Oreodoxa" to "Roystonea" the following year.