340 CONIPER2E. 



1. P. INOPS, Ait. Jersey or Scrub Pine. 



Leaves in pairs, rather short; cones oblong-conical, sometimes curved, the scale*, 

 tipped with a prominent and straight awl-shaped prickle. 



Barrens and sterile hills, common. A straggling tree 15 to 40 feet bigh, with 

 spreading or drooping branchlets ; young shoots with a purplish glaucous bloom. 

 Leaves 1% to 2% inches long. Cones 2 to 3 inches long. 



2. P. rigida, Miller. Pitch Pine. 



Leaves in threes (rarely in- fours) from very short sheaths, flattish; cones ovoid- 

 conical; the scales tipped with a short and stout recurved prickle. 



Barren sandy or gravelly plains, common. A tree 30 to 70 feet high, with very 

 rough and dark bark, and hard wood saturated with resin. Leaves rigid, 3 to £ 

 inches long, dark green. Cones usually clustered in 3s or 4s, 2 to 3 inches long. 



3. P. resinosa, Ait. Red Pine. 



Leaves in pa : rs, from long sheaths, semicylindrical, elongated ; cones ovoid-coni- 

 cal , sec •' -ointlo=s, dilated in the middle. (P. rubra, Michx.) 



I>ry woods* banks of streams ; northern parts of the State, Pme Creek, Lycom- 



ing Cc steo, TijgaCo. A tree 50 ■ to 80 feet high, with reddish and rather 



Eg and compact wood, softer than that of P. rigida. Leaves dark green, 



5 i. net sag. Cones about 3 inches long, sometimes aggregated in large and 



©lose civ 



4. P. MITTS, Michx. Yellow Pine, 



heaves h pairs (rarely in 3), from long sheaths, channelled, slender ; cones ovoid' 

 or oblong-conical ; the scales slightly enlarged at the end, tipped with a minute and 

 weak prick 1 ;' 'at 



Dry gravelly or sandy soil, common. A tree 60 to 80 feet high, 18 to 36 inches 

 thick, straight-, producing a very durable, fine-grained, moderately resinous lim- 

 ber, valuable for flooring, &c. Leaves 3 to 5 inches long, softer than in any of th6 

 preceding, dark green. Cones 2 to 3 inches long. 



5. P. Montana, N. Pome Pine. 



Leaves in pairs, short, rigid, very acuminate ; cones large, growing in clustcrs > 

 Sometimes on the trunk of the tree. 



Mifflin, Centre and Union Counties. This somewhat doubtful species was first 

 discovered by Mr. F. H. Miller, of New York, growing on the south slope of the 

 seven mountains in Mifflin county from thence to the Natural Bridge west and 

 south to Cumberland Co., Va. Since then I have found it on high sterile land in 

 the western part of Union Co. The trunk is short, rarely exceeding 30 feet in 

 height, with a rough bark and conical top. Foliage light green, very disagreeable 

 to the touch. Cones very large, 4 to 6 inches long and 3 to 4 inches in diameter. 

 This may prove to be the Table-mountain Pins of Michx. 



* * Leaves 5 in a sheath, soft and slender; scales of the cones pointless and not thick- 

 ened at the end ; barf: smooth. 



6. P; Strobus, L, White Pine. 



Leaves in fives, very slender, rather glaucous, with deciduous sheaths ; cones nar- 

 row, cylindrical, nodding, somewhat curved. 



Cool and damp woods, common. The White Pine is one of the most majestic 

 and most useful of forest trees. The trunk is straight, covered with a smoothish 

 bark, and fiom 80 to 120 feet high, with a diameter of 2 to 4 feet, or more. Leaves 

 about 4 inches long, bluish-green, forming a very soft and delicate foliage. Cone* 

 4-to 6 inches long ; the scales very slightly thickened upward. 



2. ABIES, Tourn. Spruce. Fir. 



The classical Latin name. 



Stjjrile aments scattered or somewhat clustered, towards. 



