ENUMERATION OF CONIFERS 323 



with slightly thickened or flat apophyses armed with minute, usually decidu- 

 ous prickles. South Carolina to middle Florida and Louisiana. — Apparently 

 not in cultivation in Europe and hardy only in the Southern States. 



33. P. Taeda, L. Loblolly P. (Old Field Pine. Frankincense Pine). 

 Tree to 100, occasionally to 170 feet tall, with spreading branches, the upper 

 ascending, forming a compact round-topped head; bark bright red-brown, 

 fissured into broad flat ridges covered with large, thin, appressed scales; 

 branchlets yellowish-brown, sometimes slightly bloomy; winter-buds oblong, 

 resinous: leaves slender but stiff, acute, bright green, G-9 inches long: cones 

 sessile, spreading, conic-oblong, light reddish-brown, 3-5 inches long; 

 apophysis flattened or depressed-pyramidal; umbo small, with stout and 

 short, triangular, recurved spine, lower scales not elongated ; seed }-i inch 

 long. New Jersey to Florida and Texas. — Introduced to Great Britain 

 before 1713. Hardy as far north as southern New York. Rarely cultivated 

 for ornament, but an important timber-tree, particularly in the region west 

 of the Mississippi River. 



34. P. palustris, Mill. (P. australis, Michx.). Longleaf P. (Southern 

 P.). Tree to 100 or 120 feet tall, with ascending branches forming an oblong 

 open head; bark light orange-brown, separating into large, appressed, papery 

 scales; branchlets orange-brown; winter-buds white, oblong: leaves crowded, 

 forming tufts at the end of branclilets, dark green, 8-18 inches long, with 

 internal resin-ducts: cones almost sessile, cylindric, dull brown, 6-10 inches 

 long; apophysis flattened; umbo dark brown, with triangular, reflexed, short 

 spines; seed almost 3^ inch long. Virginia to Florida and Mississippi, 

 along the coast. — Introduced to Great Britain about 1730. Hardy onlj' in 

 the Southern States. Branches are imported in great quantities into the 

 northern cities and used for decoration on account of their long handsome 

 foliage. It is the most important timber-tree of the southeastern States and 

 yields excellent resin in great quantities, the source of a large part of the 

 world supply of the naval stores. 



35. P. caribaea, Morelet (P. cubensis, Griseb. P. hetcrophylla, Sudw. P. 

 FJliottii, Engelm.). Slash P. (Sw^amp P.). Tree to 100 or UO feet tall, 

 with horizontally spreading branches forming a round-topped, broad and 

 compact head; bark separating freely into large thin scales; branchlets 

 orange-brown; winter-buds cylindric, light brown: leaves dark green and 

 lustrous, acute, in 3's and 2's, 8-1'? inches long, with internal resin-ducts: 

 cones short-peduncled, conic-oblong, dark brown and glossy, 3-6j^ inches 

 long; apophysis flattened, keeled; umbo small, with minute recurved 

 prickles; seed K~/^ inch long. Georgia to Florida, and eastern Louisiana 

 near the coast, also on the Isle of Pines near Cuba, and in Honduras and 

 eastern Guatemala. — Apparently not in cultivation in Europe. Hardy only 

 in the Southern States. 



