THE NURSERY LIST. 275 



Sweet William {Dianthus barbatus}. Caryophyllece. 



Seeds, sown in-doors or in the border. Division of the 

 plants. Best results are obtained by starting new seedlings 

 every other year. 



Swertia. Gertianeoe. 



Seeds, usually started in heat. 



Sycamore. See Platanus. 



Symphoricarpus (Waxberry, St. Peter's Wort, Snowberry-tree 



Indian Currant). Caprifoliacece. 



Seeds, handled like those of blackberries. Also by suck- 

 ers and cuttings. 



Symphytum (Comfrey). Boraginece. 



May be increased by seeds and by division. Also by root- 

 cuttings. 



Symplocos, including Hopea. Styracece. 



Seeds. Cuttings, in sand under glass. 

 Syngonium. Aroidece. 



Increased by dividing the stems into lengths of about three 

 joints, and inserting them in pots in a brisk heat. The tops 

 of plants may be cut off and inserted as large cuttings. 



Syringa (Lilac). Oleacece. 



New varieties and stocks are grown from seeds, which are 

 usually stratified until spring. Green cuttings, handled in 

 frames in summer, are largely used. Cuttings of mature 

 wood will grow ; also cuttings of the roots. Layers and 

 suckers are often employed. Varieties are extensively grafted 

 upon privet (Ligustrum), and common lilacs. Flute-budding 

 is occasionally employed. Lilacs will grow for a time when 

 worked upon the ash. Grafting succeeds well when per- 

 formed in the open air. 



Tabeniaemontana. Apocynacece. 



Increased by green cuttings, under glass, in moist beat 

 Tacca, Ataccia. Taccacece. 



Seeds and division of the roots. 

 Tacsonia. See Passiflora. 

 Tagetes (Marigold). Composite. 



Seeds, sown either in-doors or out. 

 Tamarack. See Larch. 



