Thistle Seed, with 
crown of pappus. 
Wallflower. Ped- 
uncle M, and 
pedicel N. 
Peltate, or shield- 
shaped leaf. 
Pepo. Cucumbers. 
w 
Pistil. Ovary J ; 
Style, I; Stigma, H 
Oval: Broadly elliptical. 
Ovary : That part of the pistil containing the ovules or 
future seeds, and in the course of development l^ecomes 
the fruit. 
Ovate : Egg-shaped ; like the section of an egg lengthwise. 
Palmate: Digitate (see p. 27); resembling the hand 
with the outspread fingers ; spreading from the apex of 
a petiole as the leaflets or divisions of a leaf. 
Panicle : An open flower cluster more or less branched, 
after the style of a head of oats. 
Pappus : Thistle-down, and the similar formation in 
other flowers. 
Pedicel : The stalk of each single flower of a cluster. 
Peduncle : A flower stalk of a single flower when borne 
singly, or of a cluster. 
Peltate : Shield-shaped ; applied to a leaf when the 
petiole is attached to its lower surface. 
Pepo : A fruit like the Melon and Cucumber. 
Perianth : All the flower-leaves taken collectively when 
they appear so much alike that they cannot be dis- 
tinguished as calyx and corolla ; as, for example, in 
the flowers of the Lily family. 
Pericarp : The ripened ovary ; the shell or rind of any 
fruit taken as a whole. When it separates into layers 
each layer may have a different name, but the whole 
taken together constitutes the pericarp. 
Petal : A leaf of the corolla. 
Petiole : A leaf-stalk. 
Pinnate : Feather-shaped ; a pinnate leaf consists of 
several leaflets arranged on each side of a common 
petiole. 
Pistil : The central and seed-bearing organ of the 
flower, consisting of three parts, the ovary, the style 
and the stigma. 
Plumose : Feathery ; when any slender body is beset 
with hairs along its sides, like the plume or beards on 
a feather. 
Pollen : The fertilizing dust or powder of the anther. 
Pyramidal : Shaped like a pyramid. 
Raceme : A flower cluster with the flowers arranged 
singly, on short pedicils, along the common flower- 
stalk ; as the Lily of the Valley and the Dicentra. 
Rachis (the backbone) : The axis of a spike. 
Radiate or Radiant : Furnished with ray-flowers dis- 
tinct from disk flowers ; as in the Sunflower, &c. 
Anther, discharg- 
ing pollen. 
Raceme of 
Dicentra. 
Gaillardia. Ray 
flowers around 
the margin. 
Perianth. 
Pericarps : Hazel- 
nut, Pea & Cherry. 
Nemophila, show 
ing its five petals. 
Pelargonium Leaf 
O, Petiole. 
Pinnate Leaf of 
Clianthus. 
Reflexed Segments 
of Perianth. 
43 
