thwestern Oregon over the foot-hills of the northern mountains of
California and its coastal ranges as far as the southern slopes of the
San Bernardino Mountains. It attains its best development in the
northern part of its range, but is never a tree of importance. The
serotinous habit is more pronounced in this than in any other species.
It is distinct from P. radiata, its nearest relative, by the color of
the cone, by its smooth upper trunk and by its much smaller size.

The possibility of identifying P. californiana Loiseleur (Nouv. Duham.
v. 293), through a cone said to have been sent to the Museum at Paris,
may cause this name to be applied, by reason of its early date (1812),
to some existing species. Don's radiata and tuberculata, although
considered to be the same species, were nevertheless founded on
different forms of the cone. Under a very narrow conception of
specific limits tuberculata Don might therefore acquire specific rank.
These considerations seem to make it advisable to abandon for this
species the names californica Hartw. and tuberculata Gord. for the
later name attenuata.

Plate XXXVII.

Fig. 317, Cone. Fig. 318, Magnified leaf-section.

63. PINUS RADIATA

1837 P. radiata D. Don in Trans. Linn. Soc. xvii. 442.
1837 P. tuberculata D. Don in Trans. Linn. Soc. xvii. 442.
1838 P. insignis Douglas ex Loudon, Arb. Brit. iv. 2265, f. 2171.
1841 P. Sinclairii Hooker & Arnott in Bot. Beechy Voy. 392, t. 93
(as to leaves).

Spring-shoots multinodal. Bark formation early, the branches and upper
trunk rough. Leaves ternate or binate, from 10 to 15 cm. long;
resin-ducts medial or with an occasional internal duct, hypoderm biform.
Conelets mucronate, the mucro small and dorsal. Cones from 7 to 14 cm.
long, in verticillate clusters, sessile, reflexed, ovate or oblong,
oblique, serotinous; apophyses nut-brown, lustrous, tumid in various
degrees, the posterior scales abruptly larger and very prominent, the
umbo bearing the minute prickle or its remnant.

A tall tree with rich green foliage, growing on a strip of coast south
of San Francisco, particularly in Monterey County. It grows also on
the islands forming the Santa Barbara Channel and on the Island of
Guadeloupe, Lower California. It is remarkably successful in the
warmer climates of Europe and of Australasia. The species is distinct
in its peculiar cone with rounded apo