A NATUEAL AEEANGEMENT 



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ALL THE GENERA ENUMERATED IN THE PINETUM. 



Order I. PINACE^E, the Pine JUce. 



Tribe I. ABIETINEiE, 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. ABIETINEiE VEEiE. Cones with numerous scales arranged 

 on a more or less elongated axis. 

 Gen. Einus, Linnaeus (the True Eines). Leaves in sheaths of 

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

 Flowers, male and female on the same plant, but 

 separate. 



Cones more or less conical, woody, and composed of 

 scales. 



Seeds oval, with a hard, bony shell, and either fur- 

 nished with an ample whig, or wingless. 

 1st division, Bin^e, or those kinds having two leaves in a 



sheath. 

 2nd division, Ternat,e, or those kinds having three leaves 



in each sheath. 

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



each sheath. 

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