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PHYTOLACCA DIOICA. Ombu. Large, evergreen, ornamen-
tal, and shade tree from South America. It grows with astonishing
rapidity, forming a huge buttressed trunk and a dense spreading top.
Leaves are slender stalked, somewhat resembling those of the poplar.
Male and female flowers borne on different trees in more or less
pendulous racemes, followed on pistillate trees by small berrylike
inedible fruits. Withstands only light frosts.

PINUS SINENSIS. The hard pine of northern China.  Withstands 
long drought, cold, and alkali.  Of extremely picturesque
habit when grown singly.  Extensively used in temple courts and
palace gardens. Produces medium-sized, straight trunks in forest
plantings.  Wood close grained and durable.  Distinct from P.
densiflora.

PINUS THUNBERGII. Japanese black pine. From Dr.
Nishimura, Mukden, Manchuria, through F. N. Meyer.  Tree 100 to
120 feet high, with spreading, often somewhat pendulous branches,
forming a broad pyramidal head.  Branches orange yellow.  Leaves
bright green, 3 to 4½ inches long.  Wood resinous, tough, durable,
suitable only for indoor work. Hardy; prefers sandy soil. Splendid
for avenues.

PISTACIA CHINENSIS. Chinese pistache. Tall deciduous,
dioecious tree, strikingly ornamental, with large pinnate leaves, wine-
red when young, changing to vivid green in summer and flaming
scarlet and yellow in fall. Berries inedible. Highly recommended
as a shade and ornamental tree. Trunk attains 16 feet in circum-
ference.

PISTACIA VERA. Pistache or pistachio. Small deciduous
tree, cultivated in the Mediterranean region for its nuts, with 
characteristic green meat and delicate flavor, used extensively in 
confectionery; becoming a very popular table nut.  The best varieties
bearing large nuts grafted on special stock are to be tested under
supervision. Promising new dry-land tree crop.

PITHECOLOBIUM LIGUSTRINUM. Payande. A small tree
branching from the base of the trunk and presenting a very bushy
appearance.  It has small clusters of pinkish white flowers and 
compound leaves composed of but one pair of narrow leaflets.  Fairly
common in the American Tropics and possibly of some value as an
ornamental in the southernmost sections of the United States.

PITTOSPOEUM FLORIBUNDUM. Handsome small evergreen
tree with alternate leaves found in subtropical Himalaya, ascending
to 5,000 feet on hills. Bark bitter and aromatic and reported to
possess narcotic qualities. Plant contains an aromatic resin, yellow
in color, having very tenacious properties. Timber light colored,
strong and tough, but of small size.
        