VOCABULARY. 
201 
Pel'iate. Having the petiole attached to 
some part of the under side of the 
leaf. 
Pendent. Hanging down, pendulous. 
Pen'cilled. Shaped like a painter's 
pencil or brush. 
Peregri'nus. , Foreign, wandering. 
Peren'nial. Lasting more than two 
years. 
Perfo'liate. Having a stem running 
through the leaf; differs from con- 
nate m not consisting of two leaves. 
Per' f orate. Having holes as if pricked 
through ; differs from punctate,which 
has dois resembling holes. 
Pe'ri. Around. 
Perianth. (From feri^ around, anthos, 
flower.) A sort of calyx. 
Pe-f lcarp. (From peri^ around, and kar- 
pos, fruit.) A seed-vessel or whatever 
contains the seed. 
Perid'ium. The round membranous 
case which contains the seeds of some 
mushrooms. 
Perig'ynou&. From peri^ around, and 
gy/da, pistil. 
Periph'ery. The outer edge of the frond 
of a lichen ; the circumference of a 
circle. 
Pe'risperm. (From peri, around, and 
sperma, seed.) Around the seed. 
Skin uf the seed. 
Peristo'viium. The fringe or teeth 
around the mouth of the capsule of 
mosses, under the lid, 
permanent. Any part of a plant is 
s«'d to be permanent when it remains 
.v^nger than is usual for similar parts 
in most plants. 
Persis'tent. Not falling off. See Per- 
manent. 
Per'sonate. Masked or closed. 
Pe'tal. The leaf of a corolla, usually 
coloured. 
Pe'tiole. The stalk which supports the 
leaf. 
Phenog'avious. Such flowers as have 
stamens and pistils visible, including 
all plants except the cryptogamous. 
PhysioVogy. Derived from the Greek, 
a knowledge of nature. 
Phylol'ogy. The science which treats 
of the organization of vegetables, 
nearly synonymous with the physiolo- 
gy of vegetables. 
Pi'leole. The juter covering of the 
germmating leaves of monocotyle- 
donous plants; that which formed 
the primorcJ,ial leaf. 
Pi'leus. The hat of a fungus. 
PilUi. See Columella and Column. 
Pilose. Hairy, with distinct, straight- 
ish tiairs. 
Pmo,.,. A hair 
Pimpled. See Papillose. 
Pinna. A wing feather, applied to 
leafets. 
Pinnate. A leaf is pinnate when the 
leafets are arranged in two rows on 
the side of a common petiole, as in 
the rose. 
Pinnat'ifid. Cut in a pinnate manner. 
It differs from pinnate, in being a 
simple leaf deeply parted, while pm- 
nate is a compound of distinct leafets. 
Pistil. The central organ of most, 
flowers, consisting of the germ, style, 
and stigma. 
Pis'tillate. Having pistils but no sta- 
mens. 
Pith. The spongy substance in the 
centre of the stems and roots of most 
plants. See Medulla. 
Placenta. The internal part of the 
germ or ovary to which every ovule 
is attached, either immediately or by 
the funicle. 
Plaited. Folded like a fan. 
Pla,ne. Flat v/ith an even surface. 
Pli'cate. See Plaited'. 
Plumo'se. Feather-like. 
Plu'mula or Plume. The ascending 
part of a plant at its first germination. 
Plu'rimus. Very many. 
Pod. A dry seed-vessel, not pulpy, 
most commonly applied to legumes 
and siliques. 
Podetia. The pedicels which support 
the frond of a lichen. 
Po'dosperm. (From podos, a part, and 
sperma, seed.) Pedicel of the seed. 
The same as the funicle. 
Pointal. A name sometimes used for 
pistil. 
Pollen. Properly fine flower, or the 
dust that flies in a mill. The dust 
which is contained within the anthers. 
Pollin'ia. Masses of polen, as seen la 
the class Gynandria. 
Po'lus. Many. 
Polyan'drous. Having many stamens 
inserted upon the receptacle. 
Polyceph'alous. See Monocephalous. 
Polyg'amous. Having some flowers 
which are perfect, and others with 
stamens only, or pistils only. 
Polymorphous. Changeable, assuming 
many forms. 
Polypet'alous. Having many petals. 
PolyphyVlous. Having many leaves. 
Polysep'alous. A calyx of more than 
one leaf, or sepal. 
Pome. A pulpy fruit, containing feicnp* 
sule, as the apple. 
Porous. Full of holes. 
Por'rected. Extended forward. 
Pramorse. Ending bluntly, us if bitteii 
off; ihe same as abrupt. 
