CHAPTER XLII. 



DICOTYLEDONS (Continued). 



Topic V : Dicotyledons with distinct petals and 

 hypogynous flowers. 



Order UrticiflorjE. 



412. Lesson VI. The elm family (ulmacese). — The elm tree 

 belongs to this family. The leaves of our American elm 

 (Ulmus americana) are ovate, pointed, deeply serrate, and with 

 an oblique base as shown in fig. 219. The narrow stipules 



Fig. 219. 

 Spray of leaves and flowers of the American elm ; at the left above is section of flower, 

 next is winged seed (a samara). 



which are present when the leaves first come from the bud soon 

 fall away. The flowers are in lateral clusters, which arise from 



255 



