Xll TABLE OF GENERA 



and scattered all round tae shoots, or flat, and more 



or less in two rows laterally. 



Flowers, male and female on the same plant, but 



separate. 



Cones, pendant, solitary, and terminal, with thin 



persistent scales. 

 1st division, Veea, or the true Spruces, with four-sided 



leaves, scattered all round the shoots. 

 2nd division, Tsuga, or those kinds with flat leaves, 



more or less in two rows, like the Hemlock Spruce, 



and glaucous below. 



Gen. PiCEA, Don (the Silver Firs). Leaves, solitary, flat, 

 silvery beneath, and pectinated in two rows. 



Flowers, male and female on the same plant, but 

 separate. 



Cones, erect, cylindrical, or nearly so, axillary on 

 the upper side of the branches, and with thin, de- 

 ciduous scales when ripe. 

 1st division, Bracteata, or those kinds with the bracteas 



longer than the scales of the cone. 

 2nd division, Brevibracteata, or those kinds with the 

 bracteas shorter than the scales of the cone, and 

 hidden. 



Gen. Larix, Link (the Larches). Leaves, deciduous, linear, 

 soft, and produced in bundles on the adult branches. 



Flowers, male and female on the same plant, but 

 separate. 



Cones, erect, small, oval, or somewhat cylin- 

 drical, with persistent thin scales of a leathery 

 texture, with a dorsal bractea. 



Seeds, small, with a leathery covering and mem- 

 branaceous wing. 



Gen. PsEunoLARix, Gordon (the False Larch). Leaves, deci- 

 duous, flat, linear, soft, and collected in bundles on 

 the adult branches. 



Flowers, male and female on the same plant, but 

 separate. 



Cones, pendant, oblong, rather large, brittle, and 

 covered with divergent scales, which are very de- 



