OXYDENDRUM, Ericaceae. A beautiful pyramidal tree bear¬ 
ing finger-like, somewhat pendulous panicles of white flowers 
and richly colored fall foliage. Flowers are produced even on 
plants that are only a few feet high [6B, 5F]. 
O. arboreum. Sorrel-tree; Pa. to Fla. and La. (Jy.-Au.). 
PACHISTIMA, Celastraceae. Low evergreen shrubs. P. Canbyi 
only can be recommended. It forms low compact mats in full 
sun. In partial shade it also thrives but forms a looser growth; 
sometimes affected by scale insects [5E]. 
P. Canbyi. Va. and W. Va. 
P. Myrsinites. B. C. to Calif, and N. Mex. 
PACHYSANDRA, Buxaceae. Subshrubs that thrive in sun or 
partial shade. P. terminalis makes an excellent evergreen 
ground-cover even near trees where root competition is a prob¬ 
lem [5E, 5B]. 
P. procumbens. Allegheny Spurge; W. Va. to Fla. and La. 
P. terminalis. Japanese Spurge; Japan. 
PAEDERIA, Rubiaceae. A suckering shrub not recommended 
for general planting [nursery]. 
P. scandens (P. chinensis ). China, Japan. 
PAEONIA, Ranunculaceae. Tree-peony. Shrubs with large 
colorful flowers. Numerous varieties of P. suffruticosa are popu¬ 
lar in gardens. They grow best in a rich loam [8E, 5E, nursery]. 
P. Delavayi. W. China. 
P. suffruticosa. N.W. China (My.-Jn.). 
PARROTIA, Hamamelidaceae. A good-looking small tree the 
bark of which peels off in large flakes as does that of the plane- 
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