viii 



Meisner in 1836-43 published his Genera Plantarum 

 Vasculartum, wherein he includes all Abietineae under 

 Pinus, with, as sections, Pinus proper, Picea, Link, 

 Abies, Link, and Larix, including Cedrus. 



In 1855 Carriere's Traite general des Coniferes 

 appeared ; he keeps up Pinus,, Abies, Link, Picea, Link, 

 Larix, Cedrus, and Tsuga, which includes Pseudotsuga. 

 This work enumerates 133 species, many of which are 

 now ranked as varieties. 



In 1858 appeared the first edition of Gordon's Pinetum, 

 in which he maintains Pinus, Abies, Don (including 

 Tsuga and Pseudotsuga), Picea, Don, Larix, Cedrus, and 

 Pseudolarix. He enumerates 131 species, of which 

 many are imperfectly known. 



In 1865 Henkel and Hochstetter published their Die 

 Conifer en, with the following arrangement, Pinus, Abies 

 (including Picea, Link, Abies, Link, Tsuga, and Pseudo- 

 tsuga}, Cedrus, Larix, and the new genus Pseudolarix, 

 Gord. They describe 130 species, which should be 

 reduced much as Carriere's should be. 



In 1867 the second edition of Carriere's Traite was 

 published, in which all the genera of the first edition 

 are retained together with Pseudotsuga and Keteleeria, 

 and 153 species are described, excluding many dubious 

 ones. 



In 1868 Parlatore's monograph of the order appeared 

 in the 16th volume of De Candolle's Prodromus. The 

 genus Pinus is divided into two sub-genera Pinus 

 proper for the Pines, and Sapinus ; which latter includes 



