456 COXIFER.E. (PIXE FAMILY.) 



axis of oily albumen. Cotyledons 3-12, linear. Trees. Leaves evergreen, 

 needle-shaped, 2 - 5 in a duster, their bases enclosed in a thin scarious sheath. 



* Leaves two in each sheath. 



1 P. pungens, Michx. (TABLE-MOUNTAIN PINE.) Leaves from a 

 short sheath, crowded, short and rigid ; cones large, commonly 3-4 in a whorl, 

 ovate, sessile, the thick scales pointed at the apex, and armed with a very 

 stout spine, which on the upper scales is incurved, on the lower ones recurved. 

 - .Mountains, rarely west of the Blue Ridge, Georgia to North Carolina. 

 A tree 40 - 50 high, with rigid and irregular branches. Leaves about 2' long. 

 Cones 3' long, yellowish brown. Buds resinous 



2. P. inops, Ait. (JERSEY or SCRUB PINE.) Branchlets smooth and 

 glaucous; leaves from short sheaths, scattered, short and rigid, Hat on the 

 inner face; cones solitary, conical-oblong, mostly reflexed, short peduncled, 

 deciduous; scales armed with a straight subulate rigid spine. Drv sandy or 

 gravelly ridges in the upper districts. A tree 15-30 high, with rough 

 blackish bark, and spreading or recurved flexible branches. Leaves l'-2' 

 long, dark green. Cones light brown, about 2' long. 



Var. clausa, Kiigelm. Leaves longer and finer; cones nearly sessile, 

 spreading or reflexed, mostly persistent for years; bracts 8 or 9 ; cotyledons 

 mostly 4. Barren sandy ridges near the coast, Florida. Tree 10 -40 high. 

 Wood valueless. 



3. P. glabra, Walt. (SPRUCE PINE.) Branches and branchlets smooth, 

 whitish ; leaves slender, scattered ; cones generally solitary, somewhat cvlin- 

 drical ; spines nearly obsolete. In damp rich soil, Florida to South Carolina. 



-A tree 40-60 high, with smoothish bark and soft white wood, branching 

 from near the ground. Leaves 3' -4' long. Cones about 2' long. "Wings 

 of the seed lighter colored, mere tapering, longer and less gibbous than those 

 of P. mitis." 



-4. P. mitis, Michx. (SHORT-LEAVED PINE. ) Leaves from a long 

 sheath, crowded, very slender, concave on the inner face, dark green ; cones 

 small, mostly solitary, oval or conical-oblong ; the thin scales flattened at the 

 apex, and armed with a weak incurved spine. (P. variabilis, Purs}/.) Light 

 clayey soil, Florida, and northward. A large tree, with rough bark, and fine- 

 grained valuable wood. Leaves 3' -5' long, sometimes three in a sheath. 

 Cones light brown, about 14-' long, opening at maturity. Wings of the seed 



reddish. 



* * Leaves three in each sheath. 



5. P. rigida, Miller. (PITCH PINE.) Leaves crowded, from a very short 

 sheath, rigid, flattened on the inner face; cones single or clustered, sessile, 

 ovate, the scales armed with a short and rigid recurved spine. Sandy barren 

 soil in the upper districts. A small or middle-sized tree, with thick blackish 

 rugged bark, and hard resinous wood. Branches numerous, rigid, rough with 

 the persistent bases of the leaf -bracts. Leaves 3' - 5' long. Cones 2' - 3' long, 

 light-brown . 



6. P. serotina, Michx. (Po\n PINE.) Leaves somewhat crowded, from 

 a short sheath, elongated ; cones mostly opposite, round-ovate, sessile ; the 

 scales rounded at the apex, and armed with a very small and weak spine. 



