Thistle Seed, with 

 crown of pappus. 



>4 Wallflower. Ped- 

 uncle M, and 

 pedicel N. 



Peltate, or shield- 

 shaped leaf. 



Pepo. Cucumbers. 



OVAI, : Broadly elliptical. 



OVARY : That part of the pistil containing the ovules or 

 future seeds, and in the course of development becomes 

 the fruit. 



OVATE : Egg-shaped ; like the section of an egg lengthwise. 



PALMATK: 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 ovaiy ; 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 : P'eather-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. 



Perianth. 



Pericarps : Hazel- 

 nut, Pea & Cherry. 



Nemophila, show 

 ing its five petals. 



Pelargonium Leaf. 

 O, Petiole. 



Pinnate Leaf of 

 Clianthus. 



Pistil. Ovary J ; 

 Style, I; Stigma, H 



Anther, discharg 

 ing pollen. 



Raceme of 

 Dicentra. 



43 



Gaillardia. Ray 



flowers around 

 the margin. 



Reflexed Segments 

 of Perianth. 



