18 KEY FOE THE DETERMINATION OF THE 



•determined in this way, the small leaflets which make them hav- 

 ing no buds where they join the leafstem, which otherwise might 

 be taken for the twig. 



The twig is the growth of the season. Most trees have the buds 

 and the leaves, which grow from the same point, scattered rather 

 regularly along the twig, only one. or rarely two being at the end 

 •of the twig ; the oaks, however, have from three to five such buds 

 and leaves crowded at the end of the twig, besides those on the 

 stem below, and this characteristic grouping of the buds is used 

 to separate these trees from all others. Two of the magnolias 

 have their leaves' and buds so grouped, but on account of the 

 large size of the leaves these will not be confused with the oaks. 



The figures in parenthasis refer to the page on which a more 

 lengthy description will be found. 



I. CONIFERS, TREES WITH LIMBS, CHIEFLY EVERGREEN AND 

 RESIN-BEARING, WITH LEAVES RARELY r \ INCH BROAD. 



(1) LKAVES OVER ONE INCH LONG, NEEDLE-LIKE, FROM 2 TO 5 COLLECTED 

 IN A SHORT SHEATH.— Pines. 



(a) Leaves 5 together; bark of small limbs whitish 



or gray. (p. 123.) White Pine. 



(6) Leaves 3 together. 



Leaves 10 to 15 inches long; bud at end of 

 the twig covered by many ragged, silvery 



bracts, (p. 131.) Long-leaf Pine. 



Leaves 6 to 10 inches long; bud small and 

 resinous; cone or burr cylindrical, 5 to 6 



inches long. (p. 125.) Loblolly Pine. 



Leaves 4 to 8 inches long ; small bud resi- 

 nous ; cone top-shaped ; trees of eastern 



swamps, (p 127.) Pond or Savanna Pine. 



Leaves 3 to 5 inches long ; cone top-shaped ; 

 western trees on dry ridges or rarely in deep 



swamps ; buds resinous, (p. 126.) (Northern) Pitch Pine. 



(c) Leaves 2 together, rarely 3. 



Leaves about 4 inches long ; cone less than 

 2 inches long; young twigs covered with a 

 whitish or pinkish bloom; buds not resin- 

 ous ; large and common trees, (p. 130.) Short leaf Pine. 



Leaves about 2 inches long ; cone 2| inches 



long; small trees with curving branches, 



and thin scaly bark on old trunks, (p. 128.). Jersey or Scrub Pine. 



Leaves about 2 inches long ; cone large with 



'Stout hooked prickles on the ends of the 



scales ; a rare tree, occurring chiefly along 



the Blue Ridge, (p. 129.) Table-mountain Pine. 



