A NATUEAL AEEANGEMENT 



OP 



ALL THE GENERA ENUMERATED IN THE PINETUM. 



Order I PINACE^E, the Pine Kacb. 



Tribe I. ABIETlNEiE, the Fir Tribe, having numerous 

 scales, arranged on a more or less elongated axis on the 

 cones, and with the ovules inverted or pointing to the 

 axis. 



Sec. I. ABIETINE^ VEE^. Cmes with numerous scales arranged 



on a more or less elongated axis. 



Gm. PiNus, lAnnceus (the True Pines). Leaves in sheaths of 



two, three, or five, somewhat cylindrical and persistent. 



Flowers, male and female on the same plant, hut 



separate. 



Cones more or less conical, woody, and composed of 



oval, with a hard, hony shell, and either fur* 

 nished with an ample wing, or wingless. 

 1st division, BiNiE, or those kinds having two leaves in a 



sheath. 

 2nd division, Tbenat^b, or those kinds having three leaves 



in each sheath. 

 3rd division, QuiNiE, or those kinds having five leaves in 



each sheath. 

 a 2 



