Andorra JVuRiSERws 
Chestnut Hill, 'Philadelphia 
PARROTIA 
P. Persica. Persian Iron Tree. ( Ss ) A dense-growing tree with spread¬ 
ing branches, forming a rounded oval top. The tree closely resembles the 
English beech, its foliage being of same size, shape and color, and in the fall 
turns to brilliant shades of yellow and crimson. Thrives best in well-drained 
soil. 
PERSICA. Peach 
P. vulgaris, var. alba plena. Double White-flowering Peach. (Sm) 
A flowering Peach, bearing dense clusters of very beautiful large double white 
blossoms in May. 
P. vulgaris, var. sanguinea plena. Double Red-flowering Peach. (Sm) 
Similar to the above, but with semi-double bright red flowers in May. 
P. vulgaris, var. foliis purpureis. Purple-leaved Peach. (S7/2) The 
foliage of this variety is a deep blood-red color in the spring, changing to a 
deep purplish green in late autumn. Flowers are rose-colored and single. 
P. vulgaris, var. pyramidalis. Pyramidal Peach. (S.r) Of exception¬ 
ally fastigiate form, densely covered with bright rose-pink single flowers. 
PHELLODENDRON 
P. Amurense. Chinese Cork Tree. (Lr) Of rapid growth when 
young, forming a low, round head, but becoming eventually a large tree of 
spreading form. Foliage is large; flowers greenish white, borne in terminal 
panicles. Stands drought and heat well. 
PLATANUS. Plane 
P. occidentalis. Buttonwood; American Plane. (Lr) Of broad, round- 
topped form, and one of the most massive and picturesque of American trees. 
The bark on the trunk is brown, but upon the branches there are patches of 
grayish green and sometimes creamy white. Extremely effective in winter, 
when the varied bark shows strong. A useful field or avenue tree, but for 
city planting not as desirable as P. orientalis, 
P. orientalis. Oriental Plane, or Buttonwood. (L r) This variety was 
not widely used here until we called attention to its desirable features in 1892. 
Similar to P. occidental'll but superior to it in every way, and better for street 
planting. One of the finest avenue trees in Europe, and popular in this 
country not only for its rapid growth and fine head, but also for the fact that 
ip, IS cn ^ ire v f rce from worms or insects. Especially desirable for smoky places, 
ihc bark on the trunk and branches is a darker greenish brown than that of 
P. occidentalis , and the leaves are smaller and deeply cut. (See plate on 
page 64.) 
POPULUS. Poplar 
p ..class of rapid-growing trees, valuable for quick effects and for screens, while 
/ . Bollcana and nigra , var . fastigiata are extremely useful in formal gardening. 
P. alba, var. B°ll ean a. Bolle’s Poplar. (Lr) A variety closely resem- 
lng the Lombardy Poplar ; of fastigiate form ; bark grayish green ; the upper 
side of the foliage is dull dark green, while the under side is silvery white. 
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