resin-ducts internal, hypoderm biform,
endoderm with thin outer walls. Conelets reflexed on long peduncles,
mucronate. Cones from 5 to 15 cm. long, ovate or oblong-ovate,
symmetrical, deciduous and leaving often a few basal scales on the
branch; apophyses lustrous, rufous-brown, tumid, the umbo somewhat
salient and minutely mucronate.

The northern limit of the range of P. caribaea extends from the coast
of southeastern S. Carolina through southeastern Georgia and southern
Alabama to southeastern Louisiana. It is associated with P. palustris,
taeda, serotina, echinata and glabra in this part of its range. It
continues through Florida, where it encounters P. clausa. On the
Bahamas it is the only Pine. On the Isle of Pines it finds in P.
tropicalis another associate. It also grows in Honduras and Guatemala.
The wood and resin of this species are of such excellent quality that
no commercial distinction is made between P. caribaea and P.
palustris.

Plate XXIX.

Fig. 250, Cone from the Isle of Pines. Fig. 251, Small form of cone.
Fig. 252, Large form of cone and binate leaf-fascicle. Fig. 253,
Conelet. Fig. 254, Magnified sections of leaves from binate and
ternate fascicles. Fig. 255, Habit of the tree, contrasted with a
tree of P. palustris in the middle-distance.

[Illustration: PLATE XXIX. PINUS CARIBAEA]

45. PINUS TAEDA

1753 P. taeda Linnaeus, Sp. Pl. 1000.
1788 P. lutea Walter Fl. Carol. 237.
1903 P. heterophylla Small, Fl. Southeast. U. S. 28 (not Sudworth).

Spring-shoots multinodal. Leaves in fascicles of 3, from 12 to 25 cm.
long; resin-ducts medial, sometimes with an internal duct, hypoderm
biform, endoderm with thin outer walls. Conelets erect, their scales
prolonged into a sharp point. Cones from 6 to 10 cm. long, ovate-conic,
symmetrical; apophyses dull pale nut-brown, rarely lustrous, elevated
along a transverse keel, the whole umbo forming a stout triangular spine
with slightly concave sides.

The species ranges from southern New Jersey to southern Arkansas,
Oklahoma, eastern Texas and southwestern Tennessee, but does not occur
in the lower half of the Florida peninsula. It is an important
timber-tree, manufactured into all descriptions of scantlings,
boarding and finish, but the wood is of various qualities. It may be
recognized by the spine of its cone in both years of growth. Excepting
the formidable armature of the cone o