Pansey Fly

Agromyza.

Pantiles

See Bricks.

Papaver

Poppy. Twenty-six species and many varieties. Hardy herbaceous and annuals. The former are increased by division, the latter by seed; light rich loam.

Paper Lights

Paper Lights were never much employed, and, since the introduction of Whitney's and other compositions for rendering cloth semi-transparent, are still less likely to be employed. Cartridge paper is the best for the purpose. It should be damped before it is nailed upon the frame, because when dried it becomes taut. It may then be painted over with boiled linseed oil, in which a little white lead has been incorporated. In nailing on the paper, a strip of tape should be placed between the heads of the tacks and the paper, to check the tearing to which the paper is so subject.

Paper-Mulberry

Broussone-tia papyracea.

Papyrus

Four species. Stove perennial aquatics. Seed and division. Rich loam in water.

Paraguay Tea

1lex paraguen-sis.

Parasitic Plants

Parasitic Plants are such as derive their nourishment from other living plants by rooting into their sap vessels. Examples are the Mistletoe and Dodder, which attach themselves to the stems and branches of some plants; the Hypocistus, and the Oro-banche or Broom rape, affix themselves to the roots of others. The minute fungi which constitute the mildew are also parasites. There is some doubt whether the ivy is at all parasitical; but whether it derives nourishment or not from trees, it certainly checks the respiration, and prevents the free access of light and air to those upon which it attaches. The orchidaceous plants, which grow upon dead wood as readily as upon living timber, are not parasites.

Parastranthus

Three species. Hardy herbaceous. Division. Sandy loam and peat.

Pardanthus

Two species. Hardy herbaceous. Seed and division. Light rich sheltered border.

Parinarium

Three species. Stove evergreen shrubs. Ripe cuttings. Sandy loam and peat.

Paring And Burning

Paring And Burning is never to be practised by the gardener, except for the purpose of charring the turf and rendering porous the soil cut from the banks of clayey ditches. When this is carefully done, a serviceable dressing is obtained. But paring and burning, as a general practice, is extremely wasteful; and though it may give a good crop immediately after wards, never fails, by speedy exhaustion, to demonstrate how great has been the dispersion of carbonaceous matter.

Parivoa

Parivoa grand/flora. Stove evergreen tree. Cuttings. Rich loam.

Parkia

Two species. Stove evergreen trees. Cuttings. Peat and loam.

Parkinsonia

Parkinsonia aculeata. Stove evergreen shrub. Imported seed and cuttings. Peat and loam.

Parnassia

Five species. Hardy herbaceous. Division and seed. Shaded moist peat.

Parochetus

Parochetus communis. Half-hardy evergreen creeper. Division. Light rich loam.

Paronychia

Fourteen species. Chiefly hardy perennials and annuals. P. canariensis is a green-house herbaceous, and a few others are half-hardy. Seed and division. Sandy loam.