2io The Horticulturist* s Ride- Book. 



Root-cap. The covering upon the end of a growing root. The 



elongation of the root takes place just behind the root-cap. 

 Root-grafting, Grafting upon the root. 



Root-hair. A very delicate prolongation of a cell of a young root. 

 Root-hairs are active agents in absorbing plant-food. 



Rot. The decay of the thicker part of plants, however brought 

 about ; the amount of moisture present determining whether 

 it shall be called wet or dry rot, as potato-rot. 



Runner. A procumbent or creeping herbaceous shoot which 

 takes root at the joints. 



Rust. Any plant-disease in which the surface of the plant is 

 apparently converted into a powder or scurf, particularly 

 when of a ferruginous or blackish color, as wheat-rust. 



Saddle-graft. A sort of grafting in which the scion is split be- 

 low and inserted over the end of the stock, which is cut 

 wedge-shape. 



Salad. A dish of uncooked herbs, or chopped meat combined 

 with uncooked herbs. 



Sap. A term designating loosely the liquid contents of plants. 



Saprophyte. A plant which lives upon dead or decaying matter, 

 as a mushroom or toadstool. 



Scion, or Cion. A portion of a plant which is mechanically in- 

 serted upon the same or another plant with the intention that 

 it shall grow; a graft. As commonly used, a scion, in distinc- 

 tion from a bud, bears two or more buds. - 



Secondary hybrid. A hybrid between hybrids, or between a hybrid 

 and one of its parents ; derivative hybrid ; derivation-hybrid. 



Se'pal. or Sep'al. One of the separate parts of the calyx: an 

 outer leaf of a flower. 



Shoot. A soft and gTOwing branch. 



Shrub. A small and bushy woody plant, with no central stem or 

 trunk : a bush. 



Side-graft. A sort of grafting in which the scion is inserted in 



a slit or oblique cleft in the side of the stock. 

 Slip. A cutting. 



Small-fruit. Low and bush-like fruit-plants, and the fruits they 



produce, as the currant, gooseberry, blackberry, strawberry, 

 and the like. 



Splice-graft. A sort of grafting in which both the scion and 

 stock are cut off obliquely and the cut surfaces applied to each 

 other, the two scions being held secure by bands of string. 



