Jack Pine. 



Jack Pine. (Pin- 

 us divaricata, (Ait.) 

 Sudw.). The old 

 botanical name was 

 Pinus Banksiana, 

 Lamb. This is also 

 called the Gray pine 

 and Northern Scrub 

 pine. Leaves, two 

 in a sheath about i y 2 

 inches long. This 

 pine is easily dis- 

 tinguished by its 

 habit of forming 

 several whorls of 

 branches each year 

 on the new growth 

 instead of one whorl 

 as with other pines; 

 also its light, some- 

 what yellowish, cast 

 of foliage. It is 

 found native from 

 northern New Eng- 

 land, west to Min- 

 nesota, north to Hud- 

 son Bay and north- 

 west to the Rocky 

 mountains. It attains 

 a height of 40 to 60 

 feet and a diameter 

 of 2 to 4 feet. 



This pine has been 

 found well adapted 

 to open exposure. 

 A plantation made 

 at this Station in 

 1898 is shown in 

 plates 5 and 6. This 



Plate No. 2. Showing several whorls on new growth of the Jack Pine. 



