Postelsia 2II 
with all the other sections. In the position of 
the cones, Eu-Abies and Pseudotsuga have 
lateral cones, Tsuga and Hes pero peuce terminal, 
and Picea stands intermediate with usually 
lateral but sometimes truly terminal cones. In 
the presence of resin vesicles upon the seeds, 
Hes peropeuce and Tsuga agree with Eu-Abies, 
while Pseudotsuga and Picea agree in their 
absence. 
Botanical opinion has varied greatly as to 
the generic value of the various groups of the 
Abietinee. Many botanists, including Linneus 
and Parletore, in De Candolle’s  Prodro- 
mus, have embraced all the species of this tribe 
in the single genus Pinus. On the other hand, 
all the sections of Abies mentioned above have 
been recognised as genera together with Larix, 
Cedrus, Pseudolarix and several segregates from 
the true pines. It is to be noted that several 
of the groups like Picea and Tsuga were de- 
scribed as genera at a time when the Abvetinee 
of western North America and eastern Asia 
—over two-thirds of the species—were poorly 
understood and many of them almost or quite 
