< "MFER.E 



287 



sometinif-s becoming berry -like (as in junipers). Above 300 species, 

 one -third of which inhabit North America: particularly abundant in 



elevated and mountainous regions; 



a. Cone dry, with overlapping scales. 



b. Scales many and cones 1 in. or more long. 



. Leaves long and needle-like, in sheaths or bundles >f 



2 to .">. persistent 1. /' 



cc. Leaves -~)i< >rt . scattered, persistent. 



D. In cross-section, Ivs. 4-sided: sessile '1. Picea 



dd. In cross-section. Ivs. flat: short-petioled 3. Tsuga 



ccc. Leaves short but very slender, in clusters, deciduous, l. I 



bb. Scales few (3-12), the c - about ' in. Long 5. Th 



aa. Cone modified into a fleshy, berry-like body 6. Juniperua 



1. PlNUS. Pine. 



Trees with I'm-, persistent, needle-shaped, angled leaves, in bundles of 

 - to 5, and with scale-like deciduous Leaves on the young branch Jets: sterile 

 catkins usually borne at the base of the 



new shoot : fertile cones maturing the | I I 



Becond year, often hanging on the tree \ \ I ', / 



for years: cotyledons several. ^ v \ \' & /'r'^ -* 



P. Strobus, Linn. Whitepine. Pigs. oxX tZ/sy'Zs'' 



145,272. Large forest tree, much used \^ | w^' 7 



for Lumber: leaves long ami soft, light , -s%\j^^.'ic=^^=i- j ^^" ' 



green, in 5's: cones long and symmetri '""^J^L /^~ - 



cal, with thin-edged scales, terminal on <J^?*L^ J , C -^o-^ 



the -hoot- and fulling after shedding the </^* s -i \ ^s^ 



seeds. Grows aa far Bouth as Georgia. i ^%-. - v ^ 



P. palustri-, .Mill. Long leaved p '5 j 

 Very tall tree, with nearly smooth bark: 



leaves verj long and slender (usually a m ' Plnus rWd ^ 



. i l c l nix-ii cone :it the left 



foot or more . clustered --it the end- oi 



the branches, in 3's: cones 6 in. or more lone, tin- Bcales tipped \\ itli a short 



curved spine. Lumber tree. Virginia, south. 



^> ^ P. rigid*, Mill. !',! h pm. 121, 



\' v .^v Medium ilsed or small tree with rough dark 



bark : leaves short and stiff, usual I) In 



cone 2 ! In. lone, conical, the scales with a 



---^~.rr-~ iiort spine. Grows as far south 



'/"? / ' common In pine barrens of the north Atlantic 



wWm i . An cant era spec 



Wm J P. sylvestris, Linn. Seofeh | 



<m, Medium ed tree, with glaucous -green l< 



yfn\\'\ in -'- : cole Mppcd with a 



Jfl prickle or point. Europe ommonly 



is: Pm.i lylvesti planted. 



