8 
In 1858 appeared the first edition of Gordon's 
Pinetum, in which he maintains Finns, Abies, Don 
(including Tsuga and Pseudotsuga), Picea, Don, Larix, 
Cedrus, and Pscudolarix. He enumerates 181 species, 
of which many are imperfectly known. 
In 1865 Henkel and Hochstetter published their Die 
Coniferen. with the following arrangement, Pinus, 
Abies (including Picea, Link, Abies, Link, Tsuga, and 
Pseudotsuga), Cedrus, Larix, and the new genus 
Pseudolarix, Gord. They describe 180 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 
as sections only Picea, Link, Abies, Link, Cedrus, Larix, 
Pseudolarix, Tsuga, and Pseudotsuga. The species 
described are 162. 
In 1875 the second edition of Gordon’s Pinetum was 
published, in which the same genera are retained as in 
the 185S edition, with 150 species. 
Lastly, in the Genera Plantarum (1882), Mr. Bentham 
and I have distinguished Pinus, Picea, Link, Abies, 
Link, Tsuga, Pseudotsuga., Larix, and Cedrus, to which 
must now be added Pseudolarix and probably Keteleeria, 
both at that time very imperfectly known. 
