 In 1786, Charles L'Héritier described "Didelta tetragoniifolia", based on the same plant from Versailles.In his Hortus Kewensis published in 1789, the Scottish botanist William Aiton reassigned "P. carnosa" and "P. spinosa" to Carl Peter Thunberg's genus "Choristea".Joseph Gaertner created in 1791 the new genus "Favonia" for "P. spinosa".