40 Mr. Brown, on the Proteaceae of Jussieu. 
page he has given the name of Santolina. "These facts are men- 
tioned 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 Naturz appeared, where 
the essential characters of Protea and Leucadendron first occur, 
both of them evidently derived from the natural characters pre- 
viously given. 3 
In 1753 the Species Plantarum, the most accurate of all his 
works, was given to the world; both genera are found in it, their 
species characterized, and trivial names for the first time applied 
to them: of Protea there are only two species, P. argentea and 
fusca; to the former however he referred as varieties P. saligna, 
conifera, and three others ; to the whole adding the following ob- 
servation, which may be supposed to contain his chief reason 
for applying his name Protea to this genus rather than to that 
for which in his Classes Plantarum he had first intended it. 
“ Planta naturalis in patria argentea excellit fronde inter arbores 
nitidissima omnium; at culta et captiva extra patriam exuit 
decus; variat dein etiam domi mille modis veré Protea." 
At this time he had in his Herbarium a specimen without _ 
fructification of Protea argentea properly so called ; but of its 
supposed varieties or of P. fusca none whatever. Of his genus 
Leucadendron he had only one species, L. proteoides, afterwards 
called Protea purpurea, a plant differing in many respects from the 
tribe to which he had, though not without hesitation, referred it. . 
. In 1754 the fifth edition of Genera Plantarum appeared, in 
which the chars = both genera remain exactly as in the 
second. 
In 1759 was publish tlie tenth edition of Systema Nature, 
where 
