PINUS BUNGEANA 
Pah-be-sung —White-bark Pine ; the Chinese Lace-bark Pine. Kien-lung-mu —Skin- or Bark-shedding Pine. 
Identification. PINUS BUNGEANA. Zuccarini, Gordon, Pinetum, p. 190 (1858), and Supplement, p. 64 (1862); Engelmann, in 
Revision of Genus Pinus [177], 17 ; Parlatore, in D. C. Prod., xvi., pt. 2, p. 398. 
PINUS EXCORTICATA. Gordon, Pinetum , p. 190 (1858), and ed. 2 (1875), p. 263. 
Specific Character .—Taeda foliis ternis modicis rigidis strictis, vaginis cito deciduis, strobilis conico- 
ovatis obtusis squamarum apophysi parum elevato, transversim carinato prope marginem superiorem, 
umbone parum depresso cum tuberculo reflexi brevi et robusto. 
Habitat in China boreali. 
A tree of moderate size; branches long, slender, little divided, glaucous, and covered with a smooth 
light-grey bark, similar to that of the Weymouth Pine; rendered a little rough on the stem and older 
branches by the phyllulae, which are rhomboidal. When the tree becomes older the bark peels off, 
leaving the stem and branches of a white colour, whence the Chinese name. Buds not resinous, and 
formed of several reddish-brown smooth-fringed scales, largest at the base, and rough at the edges. 
Leaves in threes (fig. i), very stiff and strong, convex on the back, and keeled on the inner face, serru¬ 
lated on the margins, and keel 2 or 3 inches long, and thickly placed along the young shoots; frequently 
in bundles towards the ends of the branches, somewhat in whorls, with stomata both on the back and on 
the inner sides. On the back (fig. 2) there is one row of stomata next the margin, then a vacant space, 
in which is usually a hollow line in the dried specimens. Beyond this there are two, three, or even four 
rows on each side of the middle, but two or three is the commonest number. On the inner sides (fig. 3) 
Fig. 6. Fig. 7. 
there is a single row near the outer margin, then a small space, then two rows, then another space—which 
is usually raised in the dried specimens—then three more rows next the keel. On section (fig. 4), a single 
[37] A la y er 
