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 ON THE PROTEACE.E OF JUSSIEU. 27

in it, their species characterised, and trivial names for the first time applied to them : of Protea there are only two species, P. argentea and fasca; to the former however he referred as varieties P. saligna, conifer a, and three others ; to the whole adding the following observation, which may he 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 frond e inter arbores nitidissima omnium ; at culta et captiva extra patriam exuit decus ; variat dein etiam domi mille modis vere Protea. "

At this time he had in his Herbarium a specimen with- out 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 dif- fering 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 characters of both genera remain exactly as in the second.

In 1759 was published the tenth edition of System a Naturae, where the essential generic characters are nearly c« the same as in the sixth, and the specific characters are copied from the Species Plantarum.

Of this latter work the second edition appeared in 1762 : it contains two additional species of Leucadendron described from Bur m annus' s Collection and Plantae Africanse; Pro- tea argentea of the first edition is here divided into two species ; the first Protea argentea now so called, the second comprehending P. saligna, conifera, and three other nearly related species : to this latter the greater part of the obser- vation added to P. argentea of the first edition is annexed, though evidently less applicable to the species thus divided.

In the sixth edition of Genera Plantarum printed in 1764 no alterations are made in the characters of these two genera.

In Mantissa prima published in 1767, two new spe- cies of Leucadendron are described : neither of these, how-

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