Of the habit of this Pine I know nothing. As a species it is very clearly defined by its peculiar cone and leaf-section. It grows in the Philippines, Sumatra, Lower Burmah and western Indo-China. In my specimen the pits of the ray-cells of the wood are both large and small. In this particular it may belong in either of two groups of species. Its uniform leaf-hypoderm associates it with this group or with P. halepensis of the Insignes. I have assumed the cone to be dehiscent at maturity and have placed it with the Lariciones, but if further information shows the cone to be serotinous, this species should be transferred to the serotinous group. Plate XXIII. Fig. 198, Cone. Fig. 199, Magnified sections of two leaves. Fig. 200, Leaf-fascicle. 35. PINUS SINENSIS 1832 P. sinensis Lambert, Gen. Pin. ed. 8vo. i. 47, t. 29. 1867 P. tabulaeformis Carrière, Trait. Conif. ed. 2, 510. 1881 P. leucosperma Maximowicz in Bull. Acad. St. Pétersb. xxvii. 558. 1899 P. yunnanensis Franchet in Jour. de Bot. xiii. 253. 1901 P. funebris Komarow in Act. Hort. Petrop. xx. 177. 1902 P. Henryi Masters in Jour. Linn. Soc. xxvi. 550. 1906 P. densata Masters in Jour. Linn. Soc. xxxvii. 416. 1906 P. prominens Masters in Jour. Linn. Soc. xxxvii. 417. 1911 P. Wilsonii Shaw in Sargent, Pl. Wilson. i. 3. Spring-shoots uninodal, pruinose. Leaves binate, ternate, or both, from 10 to 15 cm. long, stout and rigid; resin-ducts external, or external and medial. Staminate catkins in short capitate clusters. Conelets mucronate. Cones from 4 to 9 cm. long, ovate, symmetrical or oblique, tenaciously persistent, dehiscent at maturity; apophyses lustrous, pale tawny yellow at first, gradually changing to a dark nut-brown, tumid, the posterior scales often larger and more prominent. A tree of cold-temperate and subalpine levels, growing on the mountains of central and western China, and at lower altitudes in the north and in Corea. It is recognized by its tenaciously persistent cones with a remarkable change in color. It is constantly confused with P. Thunbergii and P. densiflora, neither of which grows spontaneously in China. From the former it differs in leaf-section and bud (the bud of P. sinensis is never white), from the latter in the lustre and the color variation of its cone, and from both in the frequent obliquity of its cone and in the frequent presence of trimerous leaf-fascicles. Of the two varieties of this species, densata and yunnanensis (Shaw in Sargent, Pl. Wilson. ii. 17), the former represents the extreme oblique form of cone, the latter represents the longest dimensions of cone and leaf. The effect of environment on this species can be seen in figs. 202, 203, from a lower slope and rich soil, and fig. 204, from a high rocky ledge in the same locality. Plate XXIII.