 In the following six decades, several other descriptions were published, such as by Leonard Plukenet, James Petiver, John Ray and Herman Boerhaave.Names published before 1753, the year that was chosen as a starting point for the binominal nomenclature proposed by Carl Linnaeus, are not valid however.The tree pincushion was first validly described in the first edition of "Species Plantarum" as "Leucadendron conocarpodendron" by Linnaeus in 1753.