TREES 49 



gg Leaves not apparently two-ranked 



h Leaves obovate (Fig. 30) Pawpaw 



hh Leaves not obovate 

 i Margins entire 



j Leaves heart-shaped Red Bud 



jj Leaves lanceolate Laurel Oak 



ii Margins toothed 



j Double- toothed Hazelnut 



jj Single- toothed June Berry 



Tree nursery. Grow seedlings of the oak, maple, linden, apple, cherry, 

 quince, and plum or of any other desirable shade or fruit trees. This work 

 may be started indoors in the winter, the seedlings kept in the pots until 

 late in the spring and transplanted to the school garden, later to be used 

 on the school grounds or on the home grounds of pupils. Fruit trees raised 

 from seed usually produce inferior fruit. There is a strong tendency for 

 such trees to revert to the wild types. Hence it is customary to cut back 

 such trees and graft on desirable stock. Look up the method of grafting. 

 Write out the directions on the blank sheet opposite and try out the process 

 on some of the year-old trees planted the preceding year. Observe the 

 method used in pruning shade trees in parks or along the streets. Observe 

 the method of pruning in the orchards near by. State briefly what you 

 find out as to the proper method of pruning. How should a grapevine be 

 pruned so it will bear well? Find out how to prune blackberries, rasp- 

 berries, currants. 



Common shrubs. Learn to know the following shrubs. Consult 

 Apgar's Shrubs of the United States. 



Aralia spinosa: Hercules club 



Berberii thunbergii: barberry 



Cephalanthus occidentalis: button bush 



Cornus stolonifera: red osier dogwood 



Corylus americanus: hazelnut 



Diervilla lonicera: bush honeysuckle 



Euvonymus atropurpureus: wahoo or burning bush 



Juniperus communis: common juniper 



Juniperus horizontalis: prostrate juniper 



Lonicera sullivanii: bush honeysuckle 



Physocarpus opulifolius: ninebark 



Rosa blanda: smooth or meadow rose 



Sambacus canadensis: common alder 



Sambacus racemosa: red-berried aider 



Symphocarpus racemosus: snowberry 



Syringa mdgaris: lilac 



