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Oxydendrum
OXYDENDRUM ARBOREUM (_syn Andromeda arborea_).--Sorrel-tree. Eastern United States, 1752. Unfortunately this species is not often found under cultivation, being unsuitable generally for our climate. In some instances, however, it has done well, a sp... Ozothamnus
OZOTHAMNUS ROSMARINIFOLIUS.--Australia, 1827. A pretty little Australian Composite, forming a dense, twiggy shrub, with narrow, Rosemary-like leaves, and small, whitish, Aster-like flowers which resemble those of its near relative, the Olearia, and ... Paeonia
PAEONIA MOUTAN.--Moutan Paeony, or Chinese Tree Paeony. China and Japan, 1789. A beautiful shrubby species introduced from China about one hundred years ago. The first of the kind introduced to England had single flowers, and the plant is figured in... Paliurus
PALIURUS ACULEATUS (_syn P. australis_).--Christ's Thorn, or Garden Thorn. Mediterranean region, 1596. A densely-branched, spiny shrub, with small leaves, and not very showy, yellowish-green flowers. It grows and flowers freely enough in light, peat... Parrotia
PARROTIA PERSICA.--Persia, 1848. Well known for the lovely autumnal tints displayed by the foliage when dying off. But for the flowers, too, it is well worthy of culture, the crimson-tipped stamens of the male flowers being singularly beautiful and ... Passiflora
PASSIFLORA CAERULEA.--Passion Flower. Brazil and Peru, 1699. Though not perfectly hardy, yet this handsome climbing plant, if cut down to the ground, usually shoots up freely again in the spring. The flowers, which are produced very freely, but part... Paulownia
PAULOWNIA IMPERIALIS.--Japan, 1840. This is a handsome, fast-growing tree, and one that is particularly valuable for its ample foliage, and distinct and showy flowers. Though perfectly hardy, in other respects it is unfortunate that the season at wh... Periploca
PERIPLOCA GRAECA.--Poison Vine. South Eastern Europe, and Orient, 1597. A tall, climbing shrub, with small, ovate-lanceolate leaves, and clusters of curious purplish-brown, green-tipped flowers produced in summer. The long, incurved appendages, in t... Pernettya
PERNETTYA MUCRONATA (_syn Arbutus mucronata_).--Prickly Heath. Magellan, 1828. This is a dwarf-growing, wiry shrub, with narrow, stiff leaves, and bears an abundance of white, bell-shaped flowers. It is a capital wind screen, and may be used to adva... Philadelphus
PHILADELPHUS CORONARIUS.--Mock Orange, or Syringa. South Europe, 1596. A well-known and valuable garden shrub, of from 6 feet to 10 feet high, with ovate and serrulated leaves, and pretty racemes of white or yellowish-white, fragrant flowers. P. cor... Phillyrea
P. ANGUSTIFOLIA (narrow-leaved Phillyrea), P. ilicifolia (Holly-leaved Phillyrea), P. salicifolia (Willow-leaved Phillyrea), P. buxifolia (Box-leaved Phillyrea), and P. ligustrifolia (Privet-leaved Phillyrea), are all more or less valuable species, ... Phlomis
PHLOMIS FRUTICOSA.--Jerusalem Sage. Mediterranean region, 1596. This is a neat-growing shrubby plant, with ovate acute leaves, that are covered with a yellowish down. From the axils of the upper leaves the whorls of yellow flowers are freely produce... Photinia
PHOTINIA JAPONICA (_syn Eriobotrya japonica_).--Loquat, Japan Medlar, or Japan Quince. Japan, 1787. This is chiefly remarkable for its handsome foliage, the leaves being oblong of shape and downy on the under sides. The white flowers are of no great... Phylodoce
PHYLODOCE TAXIFOLIA (_syns P. caerulea_ and _Menziesia caerulea_).--An almost extinct native species, having crowded linear leaves, and lilac-blue flowers. It is only of value for rock gardening. ... Pieris
PIERIS FLORIBUNDA (_syns Andromeda floribunda_ and _Leucothoe floribunda_).--United States, 1812. Few perfectly hardy shrubs are more beautiful than this, with its pure white Lily-of-the-Valley like flowers, borne in dense racemes and small, neat, d... Piptanthus
PIPTANTHUS NEPALENSIS (_syn Baptisia nepalensis_).--Evergreen Laburnum. Temperate Himalaya, 1821. A handsome, half-hardy shrub, of often fully 10 feet high, with trifoliolate, evergreen leaves, and terminal racemes of large yellow flowers. In the so... Pittosporum
PITTOSPORUM TOBIRA.--Japan, 1804. This forms a neat, evergreen shrub, with deep green, leathery leaves, and clusters of white, fragrant flowers, each about an inch in diameter. It is hardy in the more favoured parts of the south and west of England,... Plagianthus
PLAGIANTHUS LYALLI, a native of New Zealand (1871), and a member of the Mallow family, is a free-flowering and beautiful shrub, but one that cannot be recommended for general planting in this country. At Kew it does well and flowers freely on an eas... Polygala
POLYGALA CHAMAEBUXUS.--Bastard Box. A neat little shrubby plant, with small ovate, coriaceous leaves, and fragrant yellow and cream flowers. P. chamaebuxus purpureus differs in bearing rich reddish-purple flowers, and is one of the most showy and be... Potentilla
POTENTILLA FRUTICOSA.--Northern Hemisphere (Britain). An indigenous shrub that grows about a yard high, with pinnate leaves and golden flowers. It is a most persistent blooming plant, as often for four months, beginning in June, the flowers are prod... Prunus
PRUNUS AMYGDALUS (_syn Amygdalus communis_).--Common Almond. Barbary, 1548. Whether by a suburban roadside, or even in the heart of the crowded city, the Almond seems quite at home, and is at once one of the loveliest and most welcome of early sprin... Ptelea
PTELEA TRIFOLIATA.--Hop Tree, or Swamp Dogwood. North America, 1704. A small-growing tree, with trifoliolate, yellowish-green leaves placed on long footstalks, and inconspicuous greenish flowers. The leaves, when bruised, emit an odour resembling Ho... Punica
PUNICA GRANATUM.--Pomegranate. For planting against a southern-facing wall this pretty shrub is well suited, but it is not sufficiently hardy for the colder parts of the country. Frequently in the more favoured parts of the country it reaches a heig... Pyrus
PYRUS ARIA.--White Beam Tree. Europe (Britain). A shrub or small-growing tree, with lobed leaves, covered thickly on the under sides with a close, flocculent down. The flowers are small and white, and produced in loose corymbs. It is a handsome smal... Rhamnus
RHAMNUS ALATERNUS.--Mediterranean region, 1629. This is an evergreen shrub, with lanceolate shining leaves of a dark glossy-green colour, and pretty flowers produced from March till June. There are several well-marked varieties, one with golden and ... Rhaphiolepis
RHAPHIOLEPIS JAPONICA INTEGERRIMA (_syn R. ovata_).--A Japanese shrub (1865), with deep green, ovate, leathery leaves that are not over abundant, and produced generally at the branch-tips. The pure white, fragrant flowers are plentifully produced wh...