274 THE NURSERY-BOOK. 



Stypandra. Liliacece. 



Propagated by divisions. 

 Styrax (Storax). Styracea. 



Seeds, which must be stratified, or else sown as soon as 

 ripe. They usually lie dormant the first year. Also by lay- 

 ers and cuttings of green wood. Can be grafted upon other 

 storaxes, or upon Halesia tetraptera. 



Sugar Cane (Saccharum officinaruni). Graminece. 



Cuttings of the stems. The cuttings should possess a nope 

 or joint which bears one or more good buds. These cuttings 

 are planted directly in the field, and the plants will reach 

 maturity in two or three months. Propagation by seeds has 

 been supposed to be impossible, but recent experiments at 

 Kew indicate that it can be done. 



Sumach. See Rhus. 



Sundew. See Drosera. 



Sunflower. See Helianthus. 



Sun Rose. See Helianthemum. 



Swainsona. Leguminosce. 



Seeds. Green cuttings under cover 



Swan River Daisy. See Brachycome. 



Sweet Brier. See Rosa. 



Sweet Cicely. See Myrrhis. 



Sweet Pea. See Lathyrus. 



Sweet Potato (Convolvulus Batatas). Convolvulacece. 



Sweet potato plants are grown in hot-beds, cold-frames or 

 forcing-houses, from sound tubers of medium size. The tu- 

 ber is laid upon a sandy or other loose bed, and is then cov- 

 ered with sand or sandy loam to a depth of one or two inches. 

 Sometimes, to guard against rot, the tubers are not covered 

 until the sprouts begin to appear. The tubers may be laid 

 thickly upon the bed, but they are less apt to rot if they do 

 not touch each other. Sometimes the tubers are cut in two 

 lengthwise, the cut surface being placed down, in order to 

 place all the plant-giving surface uppermost. In four or 

 five weeks the young plants three to five inches high are 

 pulled off and planted, and others soon arise to take their 

 places. One hand should be held firmly upon the soil over 

 the tuber, while the sprout is pulled off to keep it in place. 

 Three or four crops of sprouts may be obtained from each 

 tuber. 



