PINE FAMILY, Pinaceae 



Trees with leaves in the form of needles or scales, 

 cone-bearing, except cedars. 



1. White Pine, Pinus strobus. Leaves 3-4 in. ^^ 

 long in clusters of 5. (N.)* ^r 



2. Pitch Pine, Pinus rigida. Leaves 3-5 in. long, 

 in clusters of 3. (S. C) 



3. Jersey Pine, Scrub Pine, Pinus virginiana. 

 Leaves 1J4-3 in. long, twisted, in clusters of 2. Cone 

 scales with sharp prickle. (S. E.) ^^ 



4. Austrian Pine, Pinus laricio austriaca. Leaves ^P 

 4-6 in. long, in clusters of 2. Needles of Red Pine, 

 Pinus resinosa are the same as those of Austrian Pine 

 except they have 2 resin ducts while those of the Aus- 

 train Pine have 4 resin ducts, (see fig 4 a) (I). 



5. Scotch Pine, Pinus sylvestris. Leaves 1-4 in. ^^ 

 long, twisted, in clusters of 2. Cone scales without a^Bl 

 prickle. (1). 



6 American Larch, Tamarack, Larix laricina. 



Leaves not over 1 in. long. The only member of the 

 family whose leaves fall in winter. It may be known by 

 its clusters of more than 5 needles scattered along the 

 branches. (N). 



7. Douglas Fir, Douglas Spruce, Pseudotsuga taxi- 

 folia. Leaves Va-\Va in. long, not in clusters, scattered 

 along branches. A fir is an evergreen tree with flat 

 needles which do not have leaf stalks. Foliage soft 

 to the touch; branches pointing upward. (I). 



8. Colorado Blue Spruce, Picea pungens. Leaves 

 Y^-Wi in. long. A spruce is an evergreen tree with 

 stiff, sharp-pointed, 4-sided needles. _ The Colorado 

 Blue Spruce may be known by its silvery foliage at 

 the ends of the branches, which are flat horizontally.,^. 



a). • 



9. Norway Spruce, Picea abies. Leaves J / 2 -\ in. 

 long, stiff, sharp-pointed, 4-sided. Foliage stiff to 

 the touch, branches drooping. Large cones 4-6 in. 

 long. (I). 



10. Hemlock, Tsuga canadensis. Leaves about l / 2 ^ 

 in. long, flat, blunt with distinct leaf stalks, whitish^ 

 beneath. (E). 



11. Arbor Vitae, Thuja occidentalis. Leaves re- 

 duced to flat scales hugging the twigs. Twigs are flat. 

 (S. C.) 



12. Red Cedar Juniper us virginiana. Leaves re-^^ 

 duced to flat scales hugging the twigs . Twigs are cylin-^P 

 drical. (G). 



♦Distribution in Ohio is indicated by regular com- 

 pass-point abbreviations, also G means throughout 

 the state, C, central, I, introduced, not native to the 

 state. 



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