204 The Hortinilturisf s Rule- Book. 



Double-graft. A planf twice grafted for the purpose of over- 

 coming the lack of affinity between stock and scion. 



Double-grafting. The practice and process of twice grafting or 

 budding a plant so that the root, the stem or a part of it, and 

 the top, shall each represent a different variety. It is used 

 when a certain variety will not grow upon a given root, but 

 which will grow on some variety that unites with that root ; 

 double-working. 



Double-working. See Double-grafting. 



Drupe. A fleshy or soft fruit formed entirely from the ovary, 

 and containing a hard pit ; stone-fruit. The peach aad cherry 

 are examples. 



Embryo. The rudimentary plant contained in the seed ; seed- 

 germ. 



Entomology. The science of insects. 



Evergreen. Said of plants which hold their leaves during ^vinter. 



Eye. A cutting composed of a single bud. 



Family. A group of genera and species, as Cruciferce, mustard 

 family ; Gramincc, grass family. In botany, order is the same. 



Fecundation. The action of the pollen upon the pistil ; fertiliza- 

 tion; impregnation. 



Female. Used to designate flowers or plants which bear only 

 styles. 



Fertilization. The action of the pollen upon the pistil ; fecunda- 

 tion; impregnation. , 



Fertilizer. 1. Any substance which promotes plant-growth. 

 2. Plant-food. 



Fertilizing. The act or process of applying fertilizers to plants. 

 The word fertilization should be restricted to designate the 

 action of pollen. 



Flagging. Wilting of newly-set plants or herbaceous cuttings. 



Flat. A shallow box used by gardeners in which to sow seeds 

 or handle plants. 



Floriculture. The cultivation of flowers. 



Florist. One who practices floriculture. 



Flower. An organ which contains a stamen or pistiK or both. 

 It is usually provided \vith some kind of an envelope, as calyx 

 and corolla. 



Forcing-house. A structure in which plants are grown or forced 

 out of their season. 



