PINACEAE. 



5. Pinus divaricata (Ait.) Sudw. Labra- 

 dor Pine. Gray Pine. (Fig. 114.) 



Pinus sylrestris var. divaricata Ait. Hort. Kew. 3: 366. 



1789. 



Pi mis Banksiana Lamb. Pinus, i: 7. pi. j. 1803. 

 Finns dii-aricata Sudw. Bull. Torr. Club, 20: 44. 1893. 



A slender tree, usually 4o-6o high, but sometimes 

 reaching 100, and a trunk diameter of 3^, the 

 branches spreading, the bark becoming flaky. Leaves 

 in 2's, stout, stiff, more or less curved, spreading or 

 oblique, light green, crowded along the branches, sel- 

 dom over \' long ; fibro-vascular bundles 2 ; cones 

 commonly very numerous, lateral, oblong-conic, usu- 

 ally upwardly curved, i / -2 / long, ^"-i^" thick when 

 mature ; scales thickened at the end, the transverse 

 ridge a mere line with a minute central point in place 

 of spine or prickle at maturity; young scales spiny- 

 tipped. 



In sandy soil, sometimes forming extensive forests, Xew Brunswick to Hudson Bay and the 

 Northwest Territory, south to Maine, northern Xew York, northern Illinois and Minnesota. Wood 

 soft, weak, compact, light brown; weight per cubic foot 27 Ibs. Also called Hudson Bay Pine and 

 Northern Scrub Pine. May-June. 



6. Pinus Virginiana Mill. Jersey Pine. 

 Scrub Pine. (Fig. 115.) 



Pinus I 'irginiana Mill. Card. Diet. Ed. 8, No. 9. 1768. 

 Pinus indps Ait. Hort. Kew. 3: 367. 1789. 



A slender tree, usually small, but sometimes at- 

 taining a height of 1 10 and a trunk diameter of 3, 

 the old bark dark colored, flaky, the branches 

 spreading or drooping. Leaves in 2's, dark green, 

 rather stout and stiff, spreading when old, i% f -2^ f 

 long, with 2 fibro-vascular bundles ; young sheaths 

 rarely more than 2}/z" long ; cones commonly few, 

 lateral, recurved when young, spreading when old, 

 oblong-conic, i^'-2^' long, their scales somewhat 

 thickened at the apex, the low transverse ridge 

 with a short central more or less recurved prickle. 



In sandy soil, Long Island, Xew York to South Caro- 

 lina, west to southern Indiana and Kentucky, some- 

 times forming forests. Ascends to 3300 ft. in Virginia. 

 Wood soft, weak, brittle, light orange; weight per 

 cubic foot 33 Ibs. April-May. 



7. Pinus echinata Mill. Yellow Pine. Spruce Pine. 



(Fig. 116.) 

 1768. 



Pimts ecli inala Mill. Gard. Diet. Ed. 8, No. 12. 

 Joints mitis Michx. Fl. Bor. Am. 2: 204. 1803, 



A forest tree, reaching a maximum height of about 

 100 and a trunk diameter of 4^, the branches spread- 

 ing, the old bark rough in plates. Leaves some in 

 2's, some in 3's, slender, not stiff, dark green, 3'-$' 

 long, spreading when mature ; fibro-vascular bundles 

 2 ; young sheaths 5 "-8" long ; cones lateral, oblong- 

 conic, about 2' long, usually less than i' thick when 

 the scales are closed ; scales thickened at the apex, 

 marked with a prominent transverse ridge and armed 

 with a slender small nearly straight early deciduous 

 prickle. 



In sandy soil, southern Xew York to Florida, wst to 

 Illinois, Kansas and Texas. Wood heavy, strong, orange; 

 one of the most valuable timbers: weight per cubic foot 

 38 Ibs. Also called Short-leaved Pine and Bull Pine. 

 May-June. 



