GENUS i. 



PINE FAMILY, CONIFERS. 



57 



2. Pinus resinosa Ait. Canadian Pine. 

 Red Pine. Fig. 132. 



Finns resinosa Ait. Hort. Kew. 3: 367. 1789. 



A tall forest tree, reaching a maximum height 

 of about 150 and a trunk diameter of 5, the bark 

 reddish, rather smooth, flaky when old. Leaves 2 

 in each sheath, slender, dark green, 4'-6' long, 

 with 2 fibre-vascular bundles ; sheaths 6" -12" 

 long when young ; staminate aments 6" -9" long ; 

 cones subterminal spreading, oval-conic, \\'-2\' 



long, usually less than i' thick while the scales are 

 closed ; scales thickened at the apex, obtuse, 

 rounded and devoid of spine or prickle. 



In woods, Newfoundland to Manitoba, south to 

 Massachusetts, Pennsylvania, Wisconsin and Minne- 

 sota. Wood compact, not strong, light red ; weight 

 per cubic foot 30 Ibs. May-June. Called also 

 hard- and norway-pine. 



3. Pinus palustris Mill. Long-leaved Pine. Georgia Pine. Fig. 133. 



Piirtts palustris Mill. Card. Diet. Ed. 8, No. 14. 1768. 

 Pinus attstralis Michx. f. Hist. Arb. Am. i : 64. pi. 6. 1810. 



A large tree, sometimes attaining a height of 120 and 

 a trunk diameter of 5, the bark nearly smooth. Leaves 

 in 3's, slender, dark green, clustered at the ends of the 

 branches, much elongated, S'-i6' long, with 2 fibro- 

 vascular bundles; sheaths i'-ii' long; buds long; stami- 

 nate aments rose-purple, 2'-^' long, very conspicuous ; 

 cones terminal, spreading or erect, conic-cylindric. 6'-io' 

 long, 2 '-3' thick before the scales open ; scales thickened 

 at the apex, which is provided with a transverse ridge 

 bearing a short central recurved prickle. 



In sandy, mostly dry soil, often forming extensive for- 

 ests, southern Virginia to Alabama, Florida and Texas, 

 mostly near the coast. Wood hard, strong, compact, light 

 red or orange ; weight per cubic foot 44 Ibs. This tree is 

 the chief source of our turpentine, tar, rosin, and their 

 derivatives. _Also known as Southern, Yellow, Hard or 

 Pitch Pine ; Fat, Heart, Turpentine-pine ; Virginia, Florida, 

 Texas Yellow and Long-straw pine ; Pine-broom and White 

 Rosin-tree March-April. 



4. Pinus scopulorum (Engelm.) Lemmon. Rock 

 Pine. Fig. 134. 



P. ponderosa scopulornin Engelm. in Brewer & Watson, 



Bot. Cal. 2: 126. 1880. 

 P. scopiilontui Lemmon Card. & For. 10 : 183. 1897. 



A large tree, attaining a maximum height of about 

 120 and a trunk diameter of 3^. Branches widely 

 spreading or somewhat drooping; bark nearly black, 

 scaly; leaves in 3's (rarely some of them in 2*s), rather 

 stout, 3'-6' long; cones subterminal, very dense and 

 heavy, ovoid-conic, $'-4' long, \\'-2\' thick; scales thick- 

 ened at the apex, the transverse ridge prominent, with a 

 short slender recurved prickle. 



South Dakota to Nebraska, Texas, Utah and Arizona. 

 Wood hard, strong, light brown ; weight per cubic foot 

 29 Ibs. United in first edition with Pinus ponderosa 

 Dougl. April-May. Long-leaved, Red, Bull, Western 

 pitch, and Gambier Parry's-pine. 



