Petiveria

Two species. Stove evergreen shrubs. Cuttings. Loam and peat.

Petrea

Four species. Stove evergreens. P. stapelice as a climber, and P. volubilis as a twiner, are among our handsomest plants. Cuttings. Rich loam.

Petrobium

Petrobium arboreum. Stove evergreen shrub. Cuttings. Sandy loam.

Petrocallis

Petrocallis pyrenaica. Greenhouse herbaceous. Seed or division. Sandy loam and peat.

Petromarula

Petromarula pinnata. Half-hardy herbaceous. Division. Sheltered light rich loam, and winter protection.

Petrophila

Tenspecies. Greenhouse evergreen shrubs. Ripe cuttings. ! Turfy sandy loam.

Petroselinum

Two species. Hardy biennials. Seed. Common soil. See Parsley.

Petty-Whin

Genista anglica.

Peyrousia

Eight species. Greenhouse and half-hardy bulbs. Offsets. Sandy loam and leaf-mould. Like Ixia, they will usually thrive in a light-soiled, sheltered, south border.

Phaca

Fourteen species. Hardy herbaceous, except P. canescens, requiring a green-house. P. glabra is a hardy deciduous trailer. Seed. Common soil.

Phacelia

Six species. Hardy herbaceous or annuals. Division or seed. Common soil.

Phacosperma

Phacosperma peruviana. Stove herbaceous. Seed. Peat and loam.

Phaius

Five species. Stove epiphytes and orchids. Of the former P. albus is most desirable. It is propagated from young shoots. Peat and potsherds. The other species are increased by division of the roots. Peat and sandy loam.

Phalaena

Phalaena vanaria. A moth, abounding usually in June and July, is thus described by Mr. Curtis: -

"The horns of the male are pectinated; the wings are of an ash colour and freckled; the upper have four brown marks on the superior margin, the second crossing the centre of the wing.

"The larva is a looper, having only ten legs. It infects the red currant and gooseberry bushes, feeding upon the leaves, and is found in May. It is about an inch long, bluish green, with two white dorsal and two yellow lateral lines. It is dotted with little black tubercles, which produce short black hairs. It changes late in May to a chestnut-coloured chrysalis, in a slight web, on the surface of the earth." - Gard. Chron.

Phalaeonopsis

Phalaeonopsis amabilis. Stove epiphyte. Side shoots. Wood and moss.

Phalangium

Five species. All herbaceous; P. longifolium, greenhouse; P. glaucum, and P. repalense, half-hardy; the others hardy. Division and seed. Sandy loam and peat.

Phalerocarpus

Phalerocarpus serphyllifolia. Hardy evergreen creeper. Cuttings. Moist bog.

Phalocallis

Phalocallis plumbea. Half-hardy bull). Seed. Probably in a light soil, under a south wall.

Pharbitis

Twelve species. Twiners, chiefly annual. P. caerulescens is a hardy evergreen; and P. varia, a stove evergreen twiner. The others are hardy and green-house, except P. lispida, requiring a stove. Seed. Sandy loam and leaf-mould.

Phaseolus

Thirty species. Annual twiners, chiefly hardy; a few are deciduous perennials. Seed. Light rich loam. See Kidney Bean.