AN ENCYCLOPAEDIA 
‘OF HORTICULTURE. 
Pieris—continued. 
quite entire, 2in. to 4in. long, rounded at base, downy when 
poune. Branches downy. h. 20ft. to 40ft. Nepaul, 1825. Half- 
rdy tree, poisonous to goats. densiflora is a dense-flowered 
variety, introduced from m in 1879, 
P. phillyrezfolia (Phillyrea-leaved). f. white; corolla ovoid ; 
racemes solitary, axillary, loosely four to twelve - flowered. 
n to March. “. oblong or lanceolate - oblong, obtuse 
landular-serrate near the apex. Stem alternately leafy and 
racted. h. lft. to 2ft. West Florida, 1842. Greenhouse or 
half-hardy. shrub. (B. R. xxx. 36, under name of Andromeda 
phillyrecefolia.) 
PIERIS. See Cabbage Caterpillars. 
PIGAFPETTA (name not explained by its author). 
ORD. Palme. A genus comprising three species of tall 
palms, with robust trunks prickly above, natives of the 
Malayan Archipelago and New Guinea. Flowers polygamo- 
monececious, spirally disposed; spadices paniculately much 
branched, the peduncle and primary branches forming a 
tubular, incomplete spathe. Fruit globose or oblong, 
one-valved, one-seeded. Leaves terminal, pinnatisect; 
segments opposite and alternate, lanceolate, acuminate, 
with the margins recurved at base; petioles slightly 
terete, unarmed or prickly. P. elata, the only species 
in cultivation, is a very elegant palm. It requires cul- 
ture similar to Metroxylon (which see). 
é i ices long, wit ndulous branches. fr. 
1 Pe TE eae in Rd warten seed. J. 9 
and very aiir to those of Cocos ; petioles thick, wit 
long bri , Which become spiny with age. Trunk of very hard 
wood, erect, simple, naked, annulate. Celebes, SYNs. Hyospathe 
elata (of gardens, 
Metroxylon elatum. 
PE 
Fic. 148. MUSHROOM (Agaricus campestris), showing 
; Regular Convex Pileus. 
PIGEON BERRY. See Phytolacca decandra. 
PIGEON PEA. See Cajanus indicus. 
PIG-NUT. A common name of Carya porcina 
(which see). . 
PIG-ROOT. See Sisyrinchium. 
PILEA (from pilos, a cap ; alluding to the shape of one 
of the perianth segments). Stingless Nettle. Syys. Adike, 
Dubrewilia. ORD. Urticacee. An extensive genus (about 
160 species) of stove, annual or perennial herbs, rarely 
shrubby at base, sometimes creeping or diffuse, broadly 
scattered over the tropics, but not found in Australia. 
Flowers moneecious or dimcious; male perianth of four, 
Pilea—continued. 
rarely two or three, and female of three, segments; cymes 
solitary in the axils, sometimes densely capituliform, 
sometimes loosely paniculate-branched, sessile or pe- 
dunculate. Leaves opposite, entire or toothed, three- 
nerved or nerveless. The species are mostly weeds. The 
one most commonly grown is P. microphylla, which, as 
well as the others described, is West Indian and Tropical 
American, and thrives in a compost of loam and leaf 
mould. Propagated by seeds, by cuttings, or by divi- 
sions. 
P. microphylla (small-leaved).* Artillery or Pistol Plant. 
fi., cymes sub-sessile, contracted. Summer. J. obovate, quite 
entire, with a bluntish point, minute. Stem much-branc! 
herbaceous. A. 6in. 1798. SYN. P. muscosa. 
P. muscosa (musky). A synonym of P. microphylla. 
P, pubescens (down ; es corymbiform-paniculate, often 
in er raag 8 E bia orate, poin or 
bluntish at the top, coarsely serrate, entire at base, three-nerved, 
2in. to 3in. long. Stem herbaceous, with branches Sin. to 12in. 
long. SYN. Urtica involucrata (B. M. 2481). 
P, reticulata (netted). fl., spikes axillary, simple, rarely 
’ alternate, 
Lin, long. Stem 2ft. to 3ft. high, 
SY ata. (. N. 2T) 
PILEANTHUS (from pilos, a cap, and anthos, a 
flower; in allusion to the flower being inclosed in a 
one-leaved involucre). ORD. Myrtacee. A genus com- 
prising two or three species of greenhouse, evergreen, 
Heath-like shrubs, glabrous except the flowers, and 
limited to West Australia. Flowers in the 
upper axils, forming leafy corymbs; calyx tube 
turbinate or campanulate; lobes ten, spread- 
ing, petal-like, entire; petals five, exceeding 
the calyx, spreading, shortly ciliated; brac- 
teoles scarious, inclosing the bud. Leaves 
mostly opposite, linear-terete or triquetrous. 
The under-mentioned species requires culture 
similar to Calythrix (which see). 
P. limacis (Limax-like). f. white, on pedicels shorter 
than, or slightly ex: „the leaves; calyx tube 
roe Bagg pace April. 2 1 Pp 
terete, very obtuse, nearly jin. long, smoo' 
Si. and musntiy ciliated. h. 2ft. 
to le 
PILEATE. Cap-like; having a pileus. 
PILEUS (from pileus, a cap). The name given to 
the broad, expanded part in Mushrooms and allied 
groups of the larger Fungi. It is very frequently, 
US 
Fic. 149. MARASMIUS OREADES, showing Um bonate Pileus. 
shaped like an inverted 
Fig. 148), but 
shows a considerable diversity of shape in different 
e.g, in the common Mushroom, 
saucer, or a shallow skull-cap (see 
