
          21970. PISTACIA CHINENSIS. Chinese Pistache. From Shantung, China. 
A very promising shade tree for those sections of the United States 
where the summers are warm and the winters only moderately cold. The 
young leaves are carmine-red, and the autumn foliage gorgeous scarlet 
and yellow. The wood, which is decidedly heavy and not often attacked 
by insects, is used in the manufacture of furniture. From the seeds 
an oil is obtained which is used for illuminating purposes. The young, 
partly opened, foliage buds, boiled like spinach, are sometimes eaten 
by the Chinese.

56826. PITTOSPORUM sp. From Yunnan, China. Collected by J. F. Rock,
Agricultural Explorer. A handsome tree, 30 to 40 feet high, symmetrical 
in form, with attractive foliage and cream-colored flowers borne in 
large panicles. Recommended for trial as an ornamental plant in the 
South Atlantic and Gulf Coast States, and the mild coast region of 
California.

55920. PLOCAMA PENDULA. From the Canary Islands. Collected by 
David Fairchild, Agricultural Explorer. A low-growing shrub which 
reaches about 3 feet in height, and is of graceful weeping habit, 
suggesting a miniature weeping willow. It is drought-resistant, and 
suitable for cultivation in southern California. It will not survive 
hard frosts.

51877. POPULUS MAXIMOWICZII. Poplar. Presented by John Dunbar, assistant 
superintendent of parks, Rochester, N. Y. A handsome, stately poplar said 
to reach large size in its native country, Manchuria. In the United States, 
it is one of the few large, deciduous, exotic trees which can be recommended
for general planting in extremely cold sections. Mr. Dunbar, who has 
grown it for years and who has been instrumental in effecting its 
dissemination in this country, says that it is successful on dry gravelly 
soil where Norway spruce and white ash are failures. During the first 
eight years it increases in height at the rate of 4 to 5 feet annually. 
Its foliage is of striking appearance; unlike that of many poplars, 
it hangs on until late in the season. The specimens grown in this 
country have shown remarkable freedom from pests and diseases. Unless 
all indications fail, Populus maximowiczii will become an important shade 
and windbreak tree in the northernmost parts of the United States.

58398. PRIMULA BULLEYANA. Primrose. From Yunnan, China. Collected 
by J. F. Rock, Collaborator of the Bureau of Plant Industry. A moisture-
loving primrose, probably adapted to cultivation in the United States. 
The leaves are thin, and the flower scape, about 2 feet high, bears 
superposed umbels of reddish orange, faintly fragrant blossoms, each 
about an inch broad.

56334. PRIMULA FORRESTII. Primrose. From Yunnan, China. Collected 
by J. F. Rock, Agricultural Explorer. A beautiful plant, with glandular 
fragrant foliage, in its native home producing rootstocks 2 to 3 feet in 
length; extremely long lived. The scape is stout and erect, 3 to 9 
inches high, bearing a 10 to 25-flowered umbel. Individually the 
blossoms are nearly an inch broad, orange yellow in color, and fragrant. 
Should be tested in rock gardens, on well drained, limestone soil.

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