36 ON THE PROTEACEjE OF JUSSIEU. 



while engaged in the arrangement of Van Rojen's collec- 

 tion, another fluctuation of opinion occurs, Protea being 

 limited as in the first edition of the Genera Plantarum, and 

 to Leucadendros, which here for the first time occurs, he 

 refers the Conocarpodendron of Boerhaave. 



In 1740 he pubhshed the second edition of Systema 

 Naturae, where the names Protea and Leucadendron are 

 both given ; but the references to Boerhaave are reversed, 

 Protea being confined to his Conocarpodendron, and Leu- 

 cadendron comprehending his other two genera. In this 

 sense they also appear in the second edition of the Genera 

 Plantarum published in 1742, in which the character of 

 Leucadendron is first given, some of whose species he 

 must, from the annexed asterisk, have seen recent : his 

 description of corolla and pistillum is only applicable to 

 Lepidocarpodendron . 



In 1745 Linnaeus received the Herbarium of Hermann, 

 from which he composed his Flora Zeylanica : the fourth 

 volume of this collection containing a mixture of Ceylon 

 and African plants, the latter are not noticed in this work ; 

 but from an inspection of the Herbarium itself, now in the 

 Banksian collection, it appears that he had added generic 

 names to most of them : of Proteae only three species exist 

 in the volume, of which Protea conocarpa is one : of this 

 there are on the same page two specimens, whose heads of 

 fiowers are separately pasted ; under one of these specimens 

 he has written Leucadendron, and under the second Pro- 

 tea; to a specimen of Protea Serraria on a difierent 

 40] page he has given the name of Santolina. These facts 

 are mentioned to prove, that at this period his knowledge of 

 the family must have been chiefly derived from Boerhaave's 

 figures, and perhaps from specimens which he had casually 

 seen. 



In 1748 the sixth edition of Systema Naturae appeared, 

 where the essential characters of Protea and Leucadendron 

 first occur, both of them evidently derived from the natural 

 characters previously given. 



In 1753 the Species Plantarum, the most accurate of all 

 his works, was given to the world ; both genera are found 



