Plectranthus

Six species. The annual and biennial species by seed; the shrubs and herbaceous by cuttings. All in rich light loam. They are all tenants of either the green-house or stove.

Plectritis

Plectritis congesta. Hardy annual. Seed. Common soil.

Plectronia

Plectronia corymbosa. Greenhouse evergreen tree. Cuttings. Loam and peat.

Pleroma

Four species. Stove evergreen shrubs. Young cuttings. Sandy loam and peat.

Plethora

See Extravasated Sap.

Pleurandra

Seven species. Green-house evergreen shrubs. Ripe cuttings. Sandy loam and peat.

Pleurothallis

Twenty-three species. Stove epiphytes. Division. Wood and moss.

Plocama

Plocama pendula. Green-house evergreen shrub. Cuttings. Loam and peat.

Ploughman's Spikenard

Baccharis.

Plumbago

Eleven species. Some hardy herbaceous, others stove and green-house evergreen shrubs and climbers. P. capensis produces a good effect when plunged or planted out on a rich border during summer. P. rhom-bifolia is a stove annual; this is propagated by seed, the others by cuttings, and all in common soil.

Plumieria

Twenty-two species. Stove evergreen shrubs and trees. Large cuttings, slightly dried. Sandy loam, and a little peat.

Pocockia

Pocockia cretica. Hardy annual. Seed. Common soil.

Podalyria

Thirteen species. Green-house evergreen shrubs. Cuttings. Sandy loam and peat.

Podanthe

Seven species. Stove evergreen shrubs. Cuttings in spring, slightly dried. Sandy loam and lime rubbish.

Podanthus

Podanthus mitiqui. Hardy evergreen shrub. Cuttings. Loam and peat.

Pod-Fern

Ellobocarpus.

Podocarpus

Eleven species. Green-house and stove evergreen trees. P. chinensis, P. macrophyllus, P. nueifer, and P. verticillatus, are quite hardy, if grown in a light-soiled border, sheltered from the north and east, and well drained. Cuttings. Light loam, and a little peat.

Podolepis

Five species. Hardy herbaceous. Seed and division. Sandy loam and peat.

Podolobium

Five species. Green-house evergreen shrubs. P. scandens is a climber. Young cuttings. Sandy loam and peat.

Podopterus

Podopterus mexicanus. Greenhouse evergreen shrub. Young cuttings. Loam and peat.

Podospermum

Nine species. Hardy herbaceous, biennial, and annual. The first is increased by division, and all by seed. Common soil.

Poet's Cassia

Osyris.

Pogonia

Three species. Hardy orchids. Offsets. Sandy peat.

Pogostemon

Pogostemon plectranthoides. Stove evergreen shrub. Young cuttings. Rich sandy loam.

Poinciana

Five species. Stove evergreen shrubs. Seed and cuttings. Rich light soil.

Poiretia

Poiretia scandens. Stove evergreen climber. Young cuttings. Loam and peat.

Poison-Bulb

Brunsvigia toxica-ria, and Crinum asiaticum.

Poison-Nut

Strychnos nux vomica.

Poison-Oak

Rhus toxicodendron.

Poisonous Plants

Gardeners should be much more careful than they usually are in handling the plants they cultivate-, for many of them have deadly qualities. M. Neumann, chief gardener of the Pans Jardin des Plantes, says that pruning knives and hands washed in a tank after they have been employed upon some of the exotics, will destroy the fish it contains. Hippo-mane biglandulosa, the Manchineel, the Tanghin, Sapium laurocerasus, and Cainocladia dentata, are equally deleterious to man. Gardeners who have merely rubbed the leaves of the latter between their fingers, have had swollen bodies and temporary blindness. Wounds from pruning knives smeared with the juices of such plants, are like those from poisoned arrows.