SELECT LISTS OF PLANTS. 299 



evergreen leaves, and others perennial herbaceous plants. About a 

 dozen species are natives of the United States, two of which are low herba- 

 ceous plants of the Rocky Mountain regions and far northward. Another 

 herbaceous species of tall growth viz., S.Aruncus has dioecious flowers, 

 the male plant being the one most common in cultivation. This species 

 is very widely distributed and found growing wild in the Alleghanies, 

 thence northward to Alaska and through Northern Asia and Europe. 

 The common shrub known by the name of Nine-Bark, and in most 

 botanical works as Spircea opulifolia, is now placed in the genus Neillla 

 Don., along with four or five other species found in the mountains of 

 Asia. The shrubby species are propagated by cuttings of the ripe 

 wood, by layers, and cuttings cf the roots. Herbaceous species by 

 division of the clumps. 



Staphylea (Bladder-Nut). A small genus of three or four species of 

 large shrubs with small white flowers ; the seeds produced in a three- 

 lobed, three-celled bladdery pod. Our native species (S. trifoliata) is 

 common in low grounds in the Northern and Western States. The 

 European Bladder-nut (&. pinnata), and the Japanese species (S. l>u- 

 maldi\ are occasionally cultivated. Propagated by seeds, layers, suckers 

 and cuttings of the large, rather fleshy roots. 



Stuart ia. Large, hardy, deciduous shrubs, with showy white flow- 

 ers, resembling those of the Tea-plant. There are two species indigenous 

 to the Southern States, and one or two to Japan ; the latter have recently 

 lean introduced. Propagated by seeds and layers, but the latter do not 

 strike root very readily. It is said that they are propagated by ripe wood 

 cuttings, planted under glass, in European nurseries, but I have no expe- 

 rience with this mode. 



Styrax (Storax). A genus of very ornamental deciduous shrubs, 

 represented by a half dozen species in the United States. The European 

 species (S. officinalc) is noted for producing the very powerful and fra- 

 grant balsam, known by the name of Storax. Propagated by seeds and 

 layers, and by grafting. (See Halesia, and Selection of Stocks, Chapter 

 XVIII.) 



SympJioricarpus (Snowberry, Indian Currant). A genus of about 

 a half dozen species of low-growing North American shrubs, cultivated 

 for their ornamental berries. The hardy species are common in gardens. 

 Propagated by cuttings or suckers ; the latter produced in great abund- 

 ance. 



Symplocos (Sweet-Leaf, Horse-Sugar). Evergreen trees or shrubs 

 of the Storax Family. One species native of the Southern States (S. 

 tinctoria), one of Mexico, and two or three in China and Japan. Propa- 

 gated by cuttings under glass. 



Syringa (Lilac). A genus of old and well-known ornamental shrubs. 

 There are but few species, but an immense number of cultivated varie- 

 ties, and new ones are being brought forward almost every year. Propa- 

 gated by seeds, suckers, layers, and cuttings of the larger roots. Also 



