FAMILIES OF FLOWERING PLANTS 203 



Canadensis) and its close relative, G. Suecica. Another common species 

 along streams and swamps is the red-osier dogwood (C. stolonifera). 

 The genus Nyssa includes mainly trees, N. sylvatica, being the pepperidge, 

 sour gum or tupelo, N. hijlora, the water tupelo, and N. aquatica, the 

 cotton or tupelo gum. Aucuba Japonica, a glossy, evergreen shrub from 

 Japan, is common in cultivation. Garrya is the only other North 

 American genus. 



