324 THE NURSERY LIST. 



Styraz (Storax). Styracacece. 



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

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

 layers and cuttings of green wood. Can be grafted upon 

 other storaxes, or upon Halesia tetraptera. 



Sugar Cane {Saccharujn officinarum). Graminea. 



Cuttings of the stems. The cuttings should possess a 

 node 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. Propa- 

 gation 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. Legutninosce. 



Seeds. Green cuttings under cover. 



Swan River Daisy. See Brachycome. 



Sweet Brier. See Rosa. 



Sweet Cicely. See Myrrhis. 



Sweet Pea. See Lathyrus. 



Sweet Potato (Ipomcea Batatas). Convolvulacece. 



Sweet potato plants are grown in hotbeds, coldframes 

 or forcing houses (depending upon the latitude) from 

 sound tubers of medium size. The tuber is laid upon a 

 sandy or other loose bed, and is then covered with sand 

 or sandy loam to a depth of i or 2 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 the> 

 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 — 3 to 5 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. 



