292 



MAXUAL OF GAED'EXIXG 



Plants that bloom in very early spring (not mentioning such 

 as birches, alders, and hazels) may be found in amelanchier, 

 cydonia, daphne, dirca, fors^^thia, cercis (in tree list), benzoin, 

 lonicera (L. fragrantissima), salix (S. discolor and other pussy 

 willows), shepherdia. 



Shrubs bearing conspicuous berries, pods, and the like, that 

 persist in fall or ^^-inter may be found in the genera berberis 

 (particularly 5. Thunhergii), colatea, corylus, Crataegus, euony- 

 mus, ilex, physocarpus, ostrya, ptelea, pyracantha (Plate XIX) 

 P3TUS, rhodotjTDOs, rosa {R. rugosa), staphylea, symphoricarpus, 

 viburnum, xanthoceras. 



List of shruhhery plants for the Xorth. 



The following list of shrubs (of course not complete) com- 

 prises a selection with particular reference to southern ]\Iichi- 

 gan and central Xew York, where the mercury sometimes 

 falls to fifteen degrees below zero. Application is also made 

 to Canada b}^ designating species that have been found to be 

 hardj^ at Ottawa. 



The list is arranged alphabetically by the names of the 

 genera. 



The asterisk C^') denotes that the plant is native to North 

 America. 



The double dagger (t) indicates species that are recommended 

 b}^ the Central Experimental Farms, Ottawa, Ontario. 



It is often difficult to determine whether a group should be 

 hsted among shrubs or trees. Sometimes the plant is not 

 quite a tree and is yet something more than a shrub or bush; 

 sometimes the plant may be distincth^ a tree in its southern 

 range and a shrub in its northern range; sometimes the same 

 genus or group contains both shrubs and trees. In the follow- 

 ing genera there are doubtful cases: aBsculus, alnus, amelanchier, 

 betula, caragana, castanea, cornus (C. florida), Crataegus, elas- 

 agnus, prunuS; robinia. 



