the associated
six timber-Pines of the Southern States and the only one of them with
serotinous cones. Its wood is of like value with that of P. taeda, the
two species being constantly confused by lumbermen. It is never
associated with P. rigida, but its resemblance to that Pine is so
great that it may be regarded as its serotinous form. Its leaf is
longer, its cone usually more orbicular and the prickle weaker.

Plate XXXIV.

Fig. 295, Cone. Fig. 296, Conelet and its enlarged scale. Fig. 297,
Leaf-fascicle and magnified leaf-section.

56. PINUS PUNGENS

1803 P. taeda Lambert, Gen. Pin. i. t. 16, (as to cone).
(not Linnaeus).
1806 P. pungens Lambert in Ann. Bot. ii. 198.
1852 P. montana Noll, Bot. Class Book, 340. (not Miller).

Spring-shoots multinodal. Leaves binate or ternate, from 3 to 7 cm.
long; resin-ducts medial, or with an occasional internal duct, hypoderm
biform. Scales of the conelet much prolonged into a very acute triangle.
Cones from 5 to 9 cm. long, symmetrical or subsymmetrical, tenaciously
persistent, serotinous; apophyses lustrous or sublustrous fulvous brown,
much elevated along a transverse keel, the umbo forming a stout
formidable spine, uniform or nearly uniform on all faces of the cone.

A mountain species ranging from central Pennsylvania to northern
Georgia, with isolated stations in western New Jersey and Maryland. It
is remarkable among the Pines of eastern North America for the size
and strength of the spines of its cone. The armature resembles that of
the cone of the western P. muricata, but with the difference that the
western cone is strongly oblique, the anterior and posterior spines
varying greatly in size.

Plate XXXIV.

Fig. 298, Cone. Fig. 299, Conelet and its enlarged scale. Fig. 300,
Leaf-fascicle and magnified leaf-section.

[Illustration: PLATE XXXIV. P. RIGIDA (292-294), SEROTINA (295-297),
PUNGENS (298-300)]

57. PINUS BANKSIANA

1803 P. Banksiana Lambert, Gen. Pin. i. 7. t. 3.
1804 P. hudsonia Poiret in Lamarck, Encycl. Meth. v. 339.
1810 P. rupestris Michaux f. Hist. Arbr. Am. i. 49, t. 2.
1811 P. divaricata Dumont de Courset, Bot. Cult. ed. 2, vi. 457.

Spring-shoots multinodal. Leaves binate, from 2 to 4 cm. long;
resin-ducts medial, hypoderm biform. Conelets minutely mucronate. Cones
from 3 to 5 cm. long, erect, ovate-conic, oblique, much curved or
variously wa