THE ORNAMENTAL PLANTS — SHRUBS 299 



Andromeda, Pier is Jloribunda.^- 



A small ericaceous evergreen; should have some protection from the winter 

 sun; for this purpose, it may be planted on the north side of a clump of 

 trees ; 2-6 ft. 



Shrubby cinquefoil, Potentilla fruticosa.^X 



Foliage ashy; flowers yellow, in June; 2-4 ft. 



Sand cherry, Prunus pumila * and P. Besseyi.^ 



The sand cherry of sandy shores grows 5-8 ft. ; the western sand cherry 

 (P. Besscyi) is more spreading and is grown for its fruit. The European 

 dwarf cherry {P . fruticosa) is 2-4 ft., with white flowers in umbels. 



Flowering almond, P. Japoiiica. 



In its double-flowered form, familiar for its early bloom; 3-5 ft; often 

 grafted on other stocks, which are liable to sprout and become troublesome. 



Hop-tree, Ptelea trifoliata.* 



Very interesting when bearing its roundish winged fruits; 8-10 ft., but 

 becoming larger and tree-like. 



Buckthorn, Rhamnus cathartica. 



Much used for hedges; 8-12 ft. 

 Alpine buckthorn, R. alpina. 



Foliage attractive; 5-6 ft. 



Rhododendron, Rhododendron Catawbiense * and garden varieties 

 (p. 391). 

 Hardy in well -adapted locations, 3-8 ft., and higher in its native regions. 



Great laurel, R. maximum.'^ 



A fine species for mass planting, native as far north as southern Canada. 

 Extensively transplanted from the wild. 



White kerria, Rhodotypos kerrioides. 



White flowers in May and blackish fruit ; 3-5 ft. 

 Smoke-tree (Fringe- tree erroneously), Rhus Cotinus. 



One of the best shrubs for massing ; two colors are grown ; the billowy 

 "bloom," holding late in the season, is composed of flower stems rather 

 than flowers ; size of large lilac bushes. 



Dwarf sumac, R. copallina.* 



Attractive in foliage, and especially conspicuous in autumn from the bril- 

 liant red of its leaves; 3-5 ft., sometimes much taller. 



