P. Omorika. Serbian S.; S.E. Eu. 
P. orientalis. Oriental S.; Cauc., Asia Minor. 
P. polita. Tigertail S.; Japan. 
P. pungens. Colorado S.; Colo, to N. Mex. 
P. p. argentea. 
P. p. glauca. 
P. p. Kosteriana. 
P. p. nana. 
P. p. viridis. 
P. purpurea. W. China. 
P. rubens. Red S.; N. S. to N. C. 
P. sitchensis. Sitka S.; Alaska to Calif. 
P. Smithiana. Himalayan S.; Himal. 
P. Wilsonii. C. and W. China. 
PIERIS, Ericaceae. Evergreen shrubs of great beauty especially 
when in flower. The two species commonly known as Androm¬ 
eda are the hardiest [5E]. 
P. floribunda. Mountain Andromeda; Va. and Ga. (Mr.-My.). 
P. Formosa. E. Himal. 
P. japonica. Japanese Andromeda; Japan (Mr.-My.). 
P. taiwanensis. Formosa. 
PINUS, Pinaceae. Pine. Principally trees; a few species and 
varieties merely shrubby. P. Thunbergii, P. nigra , and P. Mugo 
varieties are good for seaside planting. Many of the hardier 
pines are excellent for wind-breaks. Worthy of wider cultiva¬ 
tion are: P. Cernbra, P. Peuce, P. Bungeana, P. aristata, and 
P. Jeffreyi. The pines are among the most satisfactory of the 
cone-bearing trees grown at the New York Botanical Garden 
[6E, 6F, 7D, 7E, 7F, nursery]. 
P. albicaulis. White-bark P.; B. C. to Calif, and Wyo. 
P. aristata. Hickory P.; Calif, to Colo. 
P. Armandi. China, Formosa, Korea. 
P. attenuata. Knob-cone P.; Ore. to Calif. 
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